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Brookstein O, Shimoni E, Eliaz D, Kaplan-Ashiri I, Carmel I, Shimanovich U. Metal ions guide the production of silkworm silk fibers. Nat Commun 2024; 15:6671. [PMID: 39107276 PMCID: PMC11303403 DOI: 10.1038/s41467-024-50879-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 07/23/2024] [Indexed: 08/09/2024] Open
Abstract
Silk fibers' unique mechanical properties have made them desirable materials, yet their formation mechanism remains poorly understood. While ions are known to support silk fiber production, their exact role has thus far eluded discovery. Here, we use cryo-electron microscopy coupled with elemental analysis to elucidate the changes in the composition and spatial localization of metal ions during silk evolution inside the silk gland. During the initial protein secretion and storage stages, ions are homogeneously dispersed in the silk gland. Once the fibers are spun, the ions delocalize from the fibroin core to the sericin-coating layer, a process accompanied by protein chain alignment and increased feedstock viscosity. This change makes the protein more shear-sensitive and initiates the liquid-to-solid transition. Selective metal ion doping modifies silk fibers' mechanical performance. These findings enhance our understanding of the silk fiber formation mechanism, laying the foundations for developing new concepts in biomaterial design.
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Affiliation(s)
- Ori Brookstein
- Department of Molecular Chemistry and Materials Science, Faculty of Chemistry, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Eyal Shimoni
- Department of Chemical Research Support, Faculty of Chemistry, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Dror Eliaz
- Department of Molecular Chemistry and Materials Science, Faculty of Chemistry, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Ifat Kaplan-Ashiri
- Department of Chemical Research Support, Faculty of Chemistry, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Itay Carmel
- Department of Chemical and Structural Biology, Faculty of Chemistry, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Ulyana Shimanovich
- Department of Molecular Chemistry and Materials Science, Faculty of Chemistry, Weizmann Institute of Science, 7610001, Rehovot, Israel.
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2
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Wang Y, Yang Z, Jia B, Chen L, Yan C, Peng F, Mu T, Xue Z. Natural Deep Eutectic Solvent-Assisted Construction of Silk Nanofibrils/Boron Nitride Nanosheets Membranes with Enhanced Heat-Dissipating Efficiency. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403724. [PMID: 39054638 DOI: 10.1002/advs.202403724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/06/2024] [Indexed: 07/27/2024]
Abstract
Natural polymer-derived nanofibrils have gained significant interest in diverse fields. However, production of bio-nanofibrils with the hierarchical structures such as fibrillar structures and crystalline features remains a great challenge. Herein, an all-natural strategy for simple, green, and scalable top-down exfoliation silk nanofibrils (SNFs) in novel renewable deep eutectic solvent (DES) composed by amino acids and D-sorbitol is innovatively developed. The DES-exfoliated SNFs with a controllable fibrillar structures and intact crystalline features, novelty preserving the hierarchical structure of natural silk fibers. Owing to the amphiphilic nature, the DES-exfoliated SNFs show excellent capacity of assisting the exfoliation of several 2D-layered materials, i.e., h-BN, MoS2, and WS2. More importantly, the SNFs-assisted dispersion of BNNSs with a concentration of 59.3% can be employed to construct SNFs/BNNSs nanocomposite membranes with excellent mechanical properties (tensile strength of 416.7 MPa, tensile modulus of 3.86 GPa and toughness of 1295.4 KJ·m-3) and thermal conductivity (in-plane thermal conductivity coefficient of 3.84 W·m-1·K-1), enabling it to possess superior cooling efficiency compared with the commercial silicone pad.
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Affiliation(s)
- Yang Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing, 100083, China
| | - Zhaohui Yang
- School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, China
| | - Bingzheng Jia
- Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing, 100083, China
| | - Lan Chen
- Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing, 100083, China
| | - Chuanyu Yan
- Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing, 100083, China
| | - Feng Peng
- Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing, 100083, China
| | - Tiancheng Mu
- School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, China
| | - Zhimin Xue
- Beijing Key Laboratory of Lignocellulosic Chemistry, State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing, 100083, China
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3
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Zhu K, Li Z, Nie L, Du S, Zeng B, Song D, Zhang J, Wang J, Zhang J, Xu W. Preparation of chitin twisted fiber and its functional applications. Int J Biol Macromol 2024; 277:134124. [PMID: 39067733 DOI: 10.1016/j.ijbiomac.2024.134124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 07/17/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024]
Abstract
Chitin has garnered significant attention due to its renewable, biocompatibility and biodegradability, while its practical application seriously hindered as the functionality of chitin itself can no longer meet people's increasing requirements for materials. Here, an effective method is successfully built for high-performance chitin fibers fabrication through a multi-step strategy that involved chemical pre-crosslinking, followed by wet-twisting and wet-stretching techniques, combined with physical cross-linking. The as-prepared chitin fiber exhibited a smooth surface, adjustable diameter, and mechanical strong properties (144.6 MPa). More importantly, functional chitin fiber with magnetic or conductive abilities can be easily obtained by spraying Fe3O4 particles or Ag nanowire on the chemical pre-crosslinking chitin gel film before stretching and twisting. The doped functional inorganic particles exist in a continuous ribbon structure in the fiber reduced the decrease in material strength caused by uneven particles dispersion, resulting 88.4 % of stress and 91.6 % of strain retention. This work not only bestow invaluable insights into the fabrication of functional chitin fibers but also provide a novel approach to solve the problem of poor compatibility between organic and inorganic composite materials.
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Affiliation(s)
- Kunkun Zhu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China
| | - Zuhuan Li
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China
| | - Ling Nie
- School of Materials Science & Engineering, Hubei University of Automotive Technology, Shiyan 442002, China
| | - Siqian Du
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China
| | - Beini Zeng
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China
| | - Dengpeng Song
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China.
| | - Jinming Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Jinfeng Wang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China.
| | - Jun Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Weilin Xu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China
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4
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Hassan MA, Basha AA, Eraky M, Abbas E, El-Samad LM. Advancements in silk fibroin and silk sericin-based biomaterial applications for cancer therapy and wound dressing formulation: A comprehensive review. Int J Pharm 2024; 662:124494. [PMID: 39038721 DOI: 10.1016/j.ijpharm.2024.124494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 06/25/2024] [Accepted: 07/18/2024] [Indexed: 07/24/2024]
Abstract
Silks are a class of proteins generated naturally by different arthropods, including silkworms, spiders, scorpions, mites, wasps, and bees. This review discusses the silk fibroin and silk sericin fabricated by Bombyx mori silkworm as versatile fibers. This silk fiber is predominantly composed of hydrophobic silk fibroin and hydrophilic silk sericin. Fibroin is defined as a structural protein that bestows silk with strength, while sericin is characterized as a gum-like protein, tying the two fibrous proteins together and endowing silk proteins with elasticity. Due to their versatile structures, biocompatibility, and biodegradability, they could be tailored into intricate structures to warrant particular demands. The intrinsic functional groups of both proteins enable their functionalization and cross-linking with various biomaterials to endow the matrix with favorable antioxidant and antibacterial properties. Depending on the target applications, they can be integrated with other materials to formulate nanofibrous, hydrogels, films, and micro-nanoparticles. Given the outstanding biological and controllable physicochemical features of fibroin and sericin, they could be exploited in pharmaceutical applications involving tissue engineering, wound repair, drug delivery, and cancer therapy. This review comprehensively discusses the advancements in the implementation of different formulations of silk fibroin and sericin in wound healing and drug delivery systems, particularly for cancer treatment.
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Affiliation(s)
- Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934 Alexandria, Egypt; University Medical Center Göttingen, Georg-August-University, 37073 Göttingen, Germany.
| | - Amal A Basha
- Zoology Department, Faculty of Science, Damanhour University, Egypt
| | - Mohamed Eraky
- College of Engineering, Huazhong Agricultural University, 430070 Wuhan, China
| | - Eman Abbas
- Zoology Department, Faculty of Science, Alexandria University, Egypt
| | - Lamia M El-Samad
- Zoology Department, Faculty of Science, Alexandria University, Egypt
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Niu Q, Huang L, Fan S, Yao X, Zhang Y. 3D Printing Silk Fibroin/Polyacrylamide Triple-Network Composite Hydrogels with Stretchability, Conductivity, and Strain-Sensing Ability as Bionic Electronic Skins. ACS Biomater Sci Eng 2024; 10:3489-3499. [PMID: 38661561 DOI: 10.1021/acsbiomaterials.4c00201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Electronic skins have received increasing attention due to their great application potential in wearable electronics. Meanwhile, tremendous efforts are still needed for the fabrication of multifunctional composite hydrogels with complex structures for electronic skins via simple methods. In this work, a novel three-dimensional (3D) printing composite hydrogel with stretchability, conductivity, and strain-sensing ability is produced using a one-step photocuring method to achieve a dual-signal response of the electronic skin. The composite hydrogel exhibits a triple-network structure composed of silk microfibers (SMF), regenerated silk fibroin (RSF), and polyacrylamide (PAM). The establishment of triple networks is based on the electrostatic interaction between SMF and RSF, as well as the chemically cross-linked RSF and PAM. Thanks to its specific structure and components, the composite hydrogel possesses enhanced mechanical properties (elastic modulus of 140 kPa, compressive stress of 21 MPa, and compression modulus of 600 kPa) and 3D printability while retaining stretchability and flexibility. The interaction between negatively charged SMF and cations in phosphate-buffered saline endows the composite hydrogel with good conductivity and strain-sensing ability after immersion in a low-concentration (10 mM) salt solution. Moreover, the 3D printing composite hydrogel scaffold successfully realizes real-time monitoring. Therefore, the proposed hydrogel-based ionic sensor is promising for skin tissue engineering, real-time monitoring, soft robotics, and human-machine interfaces.
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Affiliation(s)
- Qianqian Niu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Li Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Suna Fan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xiang Yao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yaopeng Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
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Lv J, Wang J, Zeng Y, Tian S, Wang F, Zhai Y, Zhou Q, Luo X, Zhang X, Liu B, Zhou C. In vitro chemical treatment of silk increases the expression of pro-inflammatory factors and facilitates degradation in rats. J Appl Biomater Funct Mater 2024; 22:22808000231222704. [PMID: 38217423 DOI: 10.1177/22808000231222704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2024] Open
Abstract
OBJECTIVES Silk fiber is difficult to degrade in vivo, which limits its application in tissue engineering materials such as artificial nerves. Therefore, in this study aim to promote its degradation in vivo by chemical treating silk fibers in vitro. MATERIALS AND METHODS Sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), scanning electron microscopy (SEM) observations, mechanical test, Fourier transform infrared spectroscopy (FT-IR) measurements were used to investigate the degradation effect of chemicals (hydrochloric acid, phosphoric acid, acetic acid, sodium hydroxide, calcium hydroxide, sodium bicarbonate, and calcium chloride) on silk fiber in vitro. Immunofluorescence staining and transcriptome analysis were used to investigate the effect of inflammatory factors on the degradation of chemically treated silk fiber in rats. RESULTS (1) Silks were separated into finer fibers in each group. (2) FT-IR absorption peaks of amides I, II, and III overlap in each group. (3) Silk degradation degree in each group was higher than that in an untreated group. The calcium chloride-treated group was completely degraded. (4) Fibronectin, collagen I, collagen III, integrin α and CD68 were immunofluorescence positive in all vegetation section. (5) There were no significant differences in the expressions of collagen I, collagen III, and fibronectin in the vegetations formed on the 14th day of subcutaneous implantation, while integrin α, CD68, TNF-α, IL-1b, and IL-23 express at higher levels with IL-10 at lower levels. CONCLUSIONS All chemicals could completely degrade silk; however, their degradation products were not the same. The chemicals change the mechanical properties of silk by separating it into finer fibers, which increase the contact surface area between the silk and tissue fluid, accelerating the degradation of monofilaments in vivo by promoting inflammation and macrophage activity through the increased and decreased expressions of pro- and anti-inflammatory factors, respectively.
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Affiliation(s)
- Jinfeng Lv
- Institute for Silk and Related Biomaterials Research, Chongqing Academy of Animal Sciences, Chongqing, China
| | - Jieping Wang
- Institute for Silk and Related Biomaterials Research, Chongqing Academy of Animal Sciences, Chongqing, China
| | - Yao Zeng
- Institute for Silk and Related Biomaterials Research, Chongqing Academy of Animal Sciences, Chongqing, China
| | - Simeng Tian
- School of Life Sciences, Southwest University, Chongqing, China
| | - Fei Wang
- School of Life Sciences, Southwest University, Chongqing, China
| | - Yixue Zhai
- School of Life Sciences, Southwest University, Chongqing, China
| | - Qian Zhou
- School of Life Sciences, Southwest University, Chongqing, China
| | - Xiyue Luo
- School of Life Sciences, Southwest University, Chongqing, China
| | - Xuanjie Zhang
- First Clinical College, Chongqing Medical University, Chongqing, China
| | - Bin Liu
- School of Life Sciences, Southwest University, Chongqing, China
| | - Chan Zhou
- Institute for Silk and Related Biomaterials Research, Chongqing Academy of Animal Sciences, Chongqing, China
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture Textile and Biomass Sciences, Southwest University, Chongqing, China
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7
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Perera D, Li L, Walsh C, Silliman J, Xiong Y, Wang Q, Schniepp HC. Natural spider silk nanofibrils produced by assembling molecules or disassembling fibers. Acta Biomater 2023; 168:323-332. [PMID: 37414111 DOI: 10.1016/j.actbio.2023.06.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 07/08/2023]
Abstract
Spider silk is biocompatible, biodegradable, and rivals some of the best synthetic materials in terms of strength and toughness. Despite extensive research, comprehensive experimental evidence of the formation and morphology of its internal structure is still limited and controversially discussed. Here, we report the complete mechanical decomposition of natural silk fibers from the golden silk orb-weaver Trichonephila clavipes into ≈10 nm-diameter nanofibrils, the material's apparent fundamental building blocks. Furthermore, we produced nanofibrils of virtually identical morphology by triggering an intrinsic self-assembly mechanism of the silk proteins. Independent physico-chemical fibrillation triggers were revealed, enabling fiber assembly from stored precursors "at-will". This knowledge furthers the understanding of this exceptional material's fundamentals, and ultimately, leads toward the realization of silk-based high-performance materials. STATEMENT OF SIGNIFICANCE: Spider silk is one of the strongest and toughest biomaterials, rivaling the best man-made materials. The origins of these traits are still under debate but are mostly attributed to the material's intriguing hierarchical structure. Here we fully disassembled spider silk into 10 nm-diameter nanofibrils for the first time and showed that nanofibrils of the same appearance can be produced via molecular self-assembly of spider silk proteins under certain conditions. This shows that nanofibrils are the key structural elements in silk and leads toward the production of high-performance future materials inspired by spider silk.
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Affiliation(s)
- Dinidu Perera
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA
| | - Linxuan Li
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA
| | - Chloe Walsh
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA
| | - Jacob Silliman
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA
| | - Yawei Xiong
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA
| | - Qijue Wang
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA
| | - Hannes C Schniepp
- Applied Science Department, William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, USA.
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8
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Huang L, Shi J, Zhou W, Zhang Q. Advances in Preparation and Properties of Regenerated Silk Fibroin. Int J Mol Sci 2023; 24:13153. [PMID: 37685960 PMCID: PMC10487664 DOI: 10.3390/ijms241713153] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/19/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
Over the years, silk fibroin (SF) has gained significant attention in various fields, such as biomedicine, tissue engineering, food processing, photochemistry, and biosensing, owing to its remarkable biocompatibility, machinability, and chemical modifiability. The process of obtaining regenerated silk fibroin (RSF) involves degumming, dissolving, dialysis, and centrifugation. RSF can be further fabricated into films, sponges, microspheres, gels, nanofibers, and other forms. It is now understood that the dissolution method selected greatly impacts the molecular weight distribution and structure of RSF, consequently influencing its subsequent processing and application. This study comprehensively explores and summarizes different dissolution methods of SF while examining their effects on the structure and performance of RSF. The findings presented herein aim to provide valuable insights and references for researchers and practitioners interested in utilizing RSF in diverse fields.
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Affiliation(s)
| | | | | | - Qing Zhang
- College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
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9
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Meng Q, Zhao L, Geng Y, Yin P, Mao Z, Sui X, Zhao M, Benetti EM, Feng X. A one-pot approach to prepare stretchable and conductive regenerated silk fibroin/CNT films as multifunctional sensors. NANOSCALE 2023. [PMID: 37158132 DOI: 10.1039/d3nr01347b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Silk fibroin (SF)-based materials are characterized by their outstanding biocompatibility and biodegradability and are considered as the most promising candidates for next-generation flexible electronics. In order to generate such devices, SF can be mixed with carbon nanotubes (CNTs) which feature excellent mechanical, electrical, and thermal properties. However, obtaining regenerated SF with homogeneous dispersion of CNTs in a sustainable manner represents a challenging task, mainly due to the difficulty in overcoming van der Waals forces and strong π-π interactions that hold together the CNT structure. In this study, a one-pot strategy for fabricating SF/CNT films is proposed by designing SF as a modifier of CNTs through non-covalent interactions with the assistance of aqueous phosphoric acid solution. Glycerol (GL) was introduced, endowing the SF/GL/CNT composite film with excellent flexibility and stretchability. The sustainable strategy greatly simplifies the preparation process, avoiding dialysis of SF and the use of artificial dispersants. The as-fabricated SF/GL/CNT films showed an excellent mechanical strength of 1.20 MPa and high sensitivity with a gauge factor of up to 13.7 toward tensile deformation. The composite films had a sensitive monitoring capability for small strains with detection limits as low as 1% and can be assembled into versatile sensors to detect human movement. Simultaneously, the composite films showed a superb thermosensitive capacity (1.64% °C-1), which satisfied the requirement of real-time and continuous skin temperature monitoring. We anticipate that the presented one-pot strategy and the prepared composite films could open a new avenue for forthcoming technologies for electronic skins, personal health monitoring, and wearable electronics.
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Affiliation(s)
- Qiujie Meng
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
| | - Lunyu Zhao
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
| | - Yu Geng
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
| | - Pengxiang Yin
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
| | - Zhiping Mao
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology, Tai'an, Shandong 271000, China
| | - Xiaofeng Sui
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
| | - Meixin Zhao
- Department of Nuclear Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Edmondo M Benetti
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Xueling Feng
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
- Shanghai Frontier Science Research Center for Modern Textiles, Donghua University, Shanghai 201620, China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology, Tai'an, Shandong 271000, China
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10
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Yan S, He L, Hai AM, Hu Z, You R, Zhang Q, Kaplan DL. Controllable Production of Natural Silk Nanofibrils for Reinforcing Silk-Based Orthopedic Screws. Polymers (Basel) 2023; 15:polym15071645. [PMID: 37050259 PMCID: PMC10096991 DOI: 10.3390/polym15071645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
As a natural high-performance material with a unique hierarchical structure, silk is endowed with superior mechanical properties. However, the current approaches towards producing regenerated silk fibroin (SF) for the preparation of biomedical devices fail to fully exploit the mechanical potential of native silk materials. In this study, using a top-down approach, we exfoliated natural silk fibers into silk nanofibrils (SNFs), through the disintegration of interfibrillar binding forces. The as-prepared SNFs were employed to reinforce the regenerated SF solution to fabricate orthopedic screws with outstanding mechanical properties (compression modulus > 1.1 GPa in a hydrated state). Remarkably, these screws exhibited tunable biodegradation and high cytocompatibility. After 28 days of degradation in protease XIV solution, the weight loss of the screw was ~20% of the original weight. The screws offered a favorable microenvironment to human bone marrow mesenchymal stem cell growth and spread as determined by live/dead staining, F-action staining, and Alamar blue staining. The synergy between native structural components (SNFs) and regenerated SF solutions to form bionanocomposites provides a promising design strategy for the fabrication of biomedical devices with improved performance.
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11
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Hu Z, Niu Q, Hsiao BS, Yao X, Zhang Y. Bioactive polymer-enabled conformal neural interface and its application strategies. MATERIALS HORIZONS 2023; 10:808-828. [PMID: 36597872 DOI: 10.1039/d2mh01125e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Neural interface is a powerful tool to control the varying neuron activities in the brain, where the performance can directly affect the quality of recording neural signals and the reliability of in vivo connection between the brain and external equipment. Recent advances in bioelectronic innovation have provided promising pathways to fabricate flexible electrodes by integrating electrodes on bioactive polymer substrates. These bioactive polymer-based electrodes can enable the conformal contact with irregular tissue and result in low inflammation when compared to conventional rigid inorganic electrodes. In this review, we focus on the use of silk fibroin and cellulose biopolymers as well as certain synthetic polymers to offer the desired flexibility for constructing electrode substrates for a conformal neural interface. First, the development of a neural interface is reviewed, and the signal recording methods and tissue response features of the implanted electrodes are discussed in terms of biocompatibility and flexibility of corresponding neural interfaces. Following this, the material selection, structure design and integration of conformal neural interfaces accompanied by their effective applications are described. Finally, we offer our perspectives on the evolution of desired bioactive polymer-enabled neural interfaces, regarding the biocompatibility, electrical properties and mechanical softness.
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Affiliation(s)
- Zhanao Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Qianqian Niu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Benjamin S Hsiao
- Department of Chemistry, Stony Brook University, Stony Brook, New York, 11794-3400, USA
| | - Xiang Yao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Yaopeng Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China.
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12
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3D-Printing of Silk Nanofibrils Reinforced Alginate for Soft Tissue Engineering. Pharmaceutics 2023; 15:pharmaceutics15030763. [PMID: 36986622 PMCID: PMC10054105 DOI: 10.3390/pharmaceutics15030763] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 03/03/2023] Open
Abstract
The main challenge of extrusion 3D bioprinting is the development of bioinks with the desired rheological and mechanical performance and biocompatibility to create complex and patient-specific scaffolds in a repeatable and accurate manner. This study aims to introduce non-synthetic bioinks based on alginate (Alg) incorporated with various concentrations of silk nanofibrils (SNF, 1, 2, and 3 wt.%) and optimize their properties for soft tissue engineering. Alg-SNF inks demonstrated a high degree of shear-thinning with reversible stress softening behavior contributing to extrusion in pre-designed shapes. In addition, our results confirmed the good interaction between SNFs and alginate matrix resulted in significantly improved mechanical and biological characteristics and controlled degradation rate. Noticeably, the addition of 2 wt.% SNF improved the compressive strength (2.2 times), tensile strength (5 times), and elastic modulus (3 times) of alginate. In addition, reinforcing 3D-printed alginate with 2 wt.% SNF resulted in increased cell viability (1.5 times) and proliferation (5.6 times) after 5 days of culturing. In summary, our study highlights the favorable rheological and mechanical performances, degradation rate, swelling, and biocompatibility of Alg-2SNF ink containing 2 wt.% SNF for extrusion-based bioprinting.
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13
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Yang H, Wang P, Yang Q, Wang D, Wang Y, Kuai L, Wang Z. Superelastic and multifunctional fibroin aerogels from multiscale silk micro-nanofibrils exfoliated via deep eutectic solvent. Int J Biol Macromol 2023; 224:1412-1422. [PMID: 36550790 DOI: 10.1016/j.ijbiomac.2022.10.228] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/19/2022] [Accepted: 10/24/2022] [Indexed: 11/05/2022]
Abstract
Superelastic silk fibroin (SF)-based aerogels can be used as multifunctional substrates, exhibiting a promising prospect in air filtration, thermal insulation, and biomedical materials. However, fabrication of the superelastic pure SF aerogels without adding synthetic polymers remains challenging. Here, the SF micro-nano fibrils (SMNFs) that preserved mesostructures are extracted from SF fibers as building blocks of aerogels by a controllable deep eutectic solvent liquid exfoliation technique. SMNFs can assemble into multiscale fibril networks during the freeze-inducing process, resulting in all-natural SMNF aerogels (SMNFAs) with hierarchical cellular architectures after lyophilization. Benefiting from these structural features, the SMNFAs demonstrate desirable properties including ultra-low density (as low as 4.71 mg/cm3) and superelasticity (over 85 % stress retention after 100 compression cycles at 60 % strain). Furthermore, the potential applications of superelastic SMNFAs in air purification and thermal insulation are investigated to exhibit their functionality, mechanical elasticity, and structural stability. This work provides a reliable approach for the fabrication of highly elastic SF aerogels and endows application prospects in air purification and thermal insulation opportunities.
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Affiliation(s)
- Haiwei Yang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Peng Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Qiliang Yang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Dengfeng Wang
- School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
| | - Yong Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Long Kuai
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China; School of Chemical and Environmental Engineering, Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
| | - Zongqian Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
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14
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Yan S, Wang L, Fan H, Li X, You H, You R, Zhang Q, Xu W, Zhang Y. Biomimetic Natural Silk Nanofibrous Microspheres for Multifunctional Biomedical Applications. ACS NANO 2022; 16:15115-15123. [PMID: 36001029 DOI: 10.1021/acsnano.2c06331] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Silk nanofibrils (SNFs) extracted from natural silkworm silk represent a class of high-potential protein nanofiber material with unexplored biomedical applications. In this study, a SNF-assembled microsphere with extracellular matrix (ECM)-mimicking architecture and high specific surface area was developed. The SNFs were exfoliated from silkworm silks through an all-aqueous process and used as the building blocks for constructing the microspheres. Inspired by the structure and bioactive composition of ECM, hyaluronic acid (HA) was used as a bio-glue to regulate SNF assembly. With the assistance of HA, the SNF microspheres with stable fluffy nanofibrous structures were synthesized through electrospray. The biomimetic structure and nature derived composition endow the microspheres with excellent biocompatibility and enhanced osteogenic differentiation-inducing ability to mesenchymal stem cells. As proof of versatility, the SNF microspheres were further functionalized with other molecules and nanomaterials. Taking the advantages of the excellent blood compatibility and modifiability from the molecular level to the nanoscale of SNF microspheres, we demonstrated their versatile applications in protease detection and blood purification. On the basis of these results, we foresee that this natural silk-based nanofibrous microsphere may serve as a superior biomedical material for tissue engineering, early disease diagnosis, and therapeutic devices.
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Affiliation(s)
- Shuqin Yan
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Lu Wang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
| | - Hongdou Fan
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Xiufang Li
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Haining You
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Renchuan You
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Qiang Zhang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Weilin Xu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Yingying Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
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15
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Cheng G, Wang X, Wu M, Wu S, Cheng L, Zhang X, Dai F. Insignificant Difference in Biocompatibility of Regenerated Silk Fibroin Prepared with Ternary Reagent Compared with Regenerated Silk Fibroin Prepared with Lithium Bromide. Polymers (Basel) 2022; 14:polym14183903. [PMID: 36146047 PMCID: PMC9502819 DOI: 10.3390/polym14183903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Bombyx mori silk fibroin (SF) is widely used in the field of biomaterials due to its excellent biocompatibility and mechanical properties. However, SF cannot be used directly in many applications and needs to be dissolved first. Lithium bromide (LiBr) is a traditional solvent which is usually used to dissolve SF. However, LiBr has several limitations, e.g., it is expensive, it is toxic to organisms, and it is environmentally unfriendly. Herein, we investigate the possibility of developing a ternary reagent system that is inexpensive, non-toxic to organisms, and environmentally friendly as an alternative for silk fibroin solubilization. The results confirm that regenerated silk fibroin (RSF) prepared using a ternary reagent has the same morphology and amino acid composition as that prepared using LiBr, but the RSF prepared using a ternary reagent still had a small amount of calcium residue even after long-term dialysis. Further research found that the residual calcium does not cause significant differences in the structure and biological performance of the RSF, such as its cytotoxicity, blood compatibility, and antibacterial properties. Therefore, we believe that ternary reagents are an ideal alternative solvent for dissolving SF.
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Affiliation(s)
- Guotao Cheng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xin Wang
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Mengqiu Wu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Siyuan Wu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Lan Cheng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xiaoning Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
- Correspondence:
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16
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A bioinspired, strong, all-natural, superhydrophobic cellulose-based straw. Int J Biol Macromol 2022; 220:910-919. [PMID: 35998858 DOI: 10.1016/j.ijbiomac.2022.08.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/23/2022]
Abstract
The promotion of cellulose-based paper straws is one of the important ways to improve white pollution nowadays. However, developing composite straws that are simultaneously highly biocompatible, safe, and non-toxic and that overcome the low water stability and physical strength problems caused by the inherent hydrophilicity of the raw material cellulose has become an important challenge in the development process. In this study, a new all-natural superhydrophobic straw (CFS) made of a composite of cellulose nanofibers and stearic acid was introduced. Stearic acid is a saturated fatty acid derived from plant and animal oils. Inspired by the specific hydrophobicity of sugarcane cane peel, a green straw with both superhydrophobicity (water contact angle up to 153°) and remarkable mechanical strength (tensile strength up to 67.15 MPa) was developed by controlling the hydrophobic modification conditions of stearic acid through solvent vaporization. Furthermore, the composite straws under wet conditions had lower water absorption and exhibited excellent wet tensile strength compared to commercial paper straws. In addition, the composite straw without the addition of chemical binders avoids the defects of non-renewable products, fits into the global green development concept, and brings new strategies for the development of cellulose-based materials.
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17
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Shi M, Hu Y, Luo X, Liu L, Yu J, Fan Y. Tiny NaOH Assisted Facile Preparation of Silk Nanofibers and Their Nanotube-Compositing Strong, Flexible, and Conductive Films. ACS Biomater Sci Eng 2022; 8:4014-4023. [PMID: 35985039 DOI: 10.1021/acsbiomaterials.2c00667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Natural silk nanofibers (SNFs) can not only be used as good building blocks for two- or three-dimensional biomaterials but also provide a clue for understanding the theory of structure-function relationships. Nevertheless, it is still difficult to directly extract SNFs from natural silk fibers due to their high crystallinity and recalcitrant complex structures. In the present study, a dilute alkali-assisted separation of high-yield SNFs is proposed. The degummed silk was first treated with a tiny amount of alkali at a mild temperature, followed by high-pressure homogenization. Under the optimized conditions (2% sodium hydroxide, 0 °C, 48 h), SNFs with diameters of 8-42 nm and lengths of 0.9 ± 0.3 μm were prepared with yields higher than 75%, which retained the natural structures at the nanoscale and some inherent properties of silk fibers. Interestingly, SNFs can be used as a stabilizing matrix to assist carbon nanotubes (CNTs) to disperse, aiming to form a uniform and stable CNT/SNF dispersion. Thereafter, a strong and flexible conductive composite film was fabricated with good mechanical properties. The composite film showed good piezoelectric properties and electric thermal response, which has promising application prospects for SNFs, such as in optical devices, nanoelectronics, and biosensors.
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Affiliation(s)
- Mengyue Shi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
| | - Yanlei Hu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
| | - Xin Luo
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
| | - Liang Liu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
| | - Juan Yu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
| | - Yimin Fan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
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18
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Yao X, Zou S, Fan S, Niu Q, Zhang Y. Bioinspired silk fibroin materials: From silk building blocks extraction and reconstruction to advanced biomedical applications. Mater Today Bio 2022; 16:100381. [PMID: 36017107 PMCID: PMC9395666 DOI: 10.1016/j.mtbio.2022.100381] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/22/2022] [Accepted: 07/23/2022] [Indexed: 12/27/2022]
Abstract
Silk fibroin has become a promising biomaterial owing to its remarkable mechanical property, biocompatibility, biodegradability, and sufficient supply. However, it is difficult to directly construct materials with other formats except for yarn, fabric and nonwoven based on natural silk. A promising bioinspired strategy is firstly extracting desired building blocks of silk, then reconstructing them into functional regenerated silk fibroin (RSF) materials with controllable formats and structures. This strategy could give it excellent processability and modifiability, thus well meet the diversified needs in biomedical applications. Recently, to engineer RSF materials with properties similar to or beyond the hierarchical structured natural silk, novel extraction and reconstruction strategies have been developed. In this review, we seek to describe varied building blocks of silk at different levels used in biomedical field and their effective extraction and reconstruction strategies. This review also present recent discoveries and research progresses on how these functional RSF biomaterials used in advanced biomedical applications, especially in the fields of cell-material interactions, soft tissue regeneration, and flexible bioelectronic devices. Finally, potential study and application for future opportunities, and current challenges for these bioinspired strategies and corresponding usage were also comprehensively discussed. In this way, it aims to provide valuable references for the design and modification of novel silk biomaterials, and further promote the high-quality-utilization of silk or other biopolymers.
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19
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Lin M, Xie W, Cheng X, Yang Y, Sonamuthu J, Zhou Y, Yang X, Cai Y. Fabrication of silk fibroin film enhanced by acid hydrolyzed silk fibroin nanowhiskers to improve bacterial inhibition and biocompatibility efficacy. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1308-1323. [PMID: 35260043 DOI: 10.1080/09205063.2022.2051694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
In this study, silk fibroin nanowhiskers (SNWs) were extracted from natural silk fiber by sulfuric acid hydrolysis with the assistance of ultrasonic wave treatment. The obtained SNWs were mixed with regenerated silk fibroin (RSF) solution to fabricate the SNWs/RSF films. The fabricating SNWs were systematically characterized by using SEM, FTIR, and the SNWs/RSF films were observed by digital camera, PM, etc. The results show that the monodisperse SNWs are evenly distributed in the RSF film. The presence of SNWs in RSF film significantly improves the performances of the film, including the swelling ability, mechanical properties, hydrophilicity, antibacterial efficacy, cytocompatibility. Meanwhile, the SNWs/RSF film can endorse the wound healing efficiency in vivo mice wound site. The proposed techniques for extracting SNWs and fabricating silk fibroin composite film may provide a valuable method for creating an ideal silk-based material for biomedical applications.
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Affiliation(s)
- Minjie Lin
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, National Engineering Lab for Textile Fiber Materials and Processing Technology, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
| | - Wenjiao Xie
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, National Engineering Lab for Textile Fiber Materials and Processing Technology, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiuwen Cheng
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, National Engineering Lab for Textile Fiber Materials and Processing Technology, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yuncong Yang
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, National Engineering Lab for Textile Fiber Materials and Processing Technology, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
| | | | - Ying Zhou
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiaogang Yang
- Academy of Science and Technology, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yurong Cai
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, National Engineering Lab for Textile Fiber Materials and Processing Technology, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
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20
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Xie H, Bai Q, Kong F, Li Y, Zha X, Zhang L, Zhao Y, Gao S, Li P, Jiang Q. Allantoin-functionalized silk fibroin/sodium alginate transparent scaffold for cutaneous wound healing. Int J Biol Macromol 2022; 207:859-872. [PMID: 35358577 DOI: 10.1016/j.ijbiomac.2022.03.147] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 12/26/2022]
Abstract
In clinical application, it's highly desirable for developing bio-functionalized cutaneous scaffold with transparent features for convenient observation, excellent biocompatibility, and high efficiency for promoting wound repair. Herein, allantoin-functionalized composite hydrogel was developed by coupling silk fibroin (SF) and sodium alginate (SA) for treatment of cutaneous wounds. The prepared allantoin-functionalized SF-SA composite scaffolds (AFAS) exhibited excellent mechanical properties, especially featured by similar ultimate tensile strength (UTS) and elongation at breaking to human skin. Besides, the solvent-casting method guaranteed the AFAS to obtain highly transparent properties with sufficient moisture permeability and excellent adhesion in wet state. In vitro cellular experiments demonstrated excellent biocompatibility of the scaffold that attachment and proliferation of NIH-3T3 fibroblast cells was promoted in the presence of AFAS. Furthermore, the scaffolds exhibited efficient hemostatic property, based on rat hepatic hemorrhage model. In a cutaneous excisional mouse wound model, the AFAS significantly improved the wound closure rate, compared with pure SF-SA scaffolds and blank control. Moreover, the histomorphological assessments showed that AFAS facilitated the integrity of skin and wound healing process by enhancing collagen deposition, re-epithelialization and vascularization at wound site. The results demonstrate that the novel allantoin-functionalized SF/SA transparent hydrogel has great potential for clinical treatment of cutaneous wound.
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Affiliation(s)
- Haojiang Xie
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Qiao Bai
- Department of Pathology, Southwest Hospital, Chongqing 400038, China
| | - Fankai Kong
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Yang Li
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Xiaoying Zha
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Lingqin Zhang
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Yiming Zhao
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Shasha Gao
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Ping Li
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Qifeng Jiang
- Medical Information College, Chongqing Medical University, Chongqing 400016, China.
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21
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Ding Y, Chen X, Zhou Y, Ren X, Zhang W, Li M, Zhang Q, Jiang T, Ding B, Shi D, You J. Single Molecular Layer of Chitin Sub-Nanometric Nanoribbons: One-Pot Self-Exfoliation and Crystalline Assembly into Robust, Sustainable, and Moldable Structural Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201287. [PMID: 35355436 PMCID: PMC9165516 DOI: 10.1002/advs.202201287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Indexed: 06/14/2023]
Abstract
Sub-nanometric materials (SNMs) represent a series of unprecedented size-/morphology-related properties applicable in theoretical research and diverse cutting-edge applications. However, in-depth investigation and wide utilization of organic SNMs are frequently hindered, owing to the complex synthesis procedures, insufficient colloidal stability, poor processability, and high cost. In this work, a low-cost, energy-efficient, convenient, effective, and scalable method is demonstrated for directly exfoliating chitin SNMs from their natural sources through a one-pot "tandem molecular intercalation" process. The resultant solution-like sample, which exhibits ribbon-like feature and contains more than 85% of the single molecular layer (thickness <0.6 nm), is capable of being solution-processed to different types of materials. Thanks to the sub-nanometric size and rich surface functional groups, chitin SNMs reveal versatile intriguing properties that rarely observe in their nano-counterparts (nanofibrils), e.g., crystallization-like assembly in the colloidal state and alcoplasticity/self-adhesiveness in the bulk aggregate state. The finding in this work not only opens a new avenue for the high value-added utilization of chitin, but also provides a new platform for both the theoretical study and practical applications of organic SNMs.
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Affiliation(s)
- Yugao Ding
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Xizhi Chen
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Youshuang Zhou
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Xiaoming Ren
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Weihua Zhang
- CAS Key Lab of Bio‐Based MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesSongling Road 189Qingdao266101P. R. China
| | - Mingjie Li
- CAS Key Lab of Bio‐Based MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesSongling Road 189Qingdao266101P. R. China
| | - Qunchao Zhang
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Tao Jiang
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Beibei Ding
- Key Laboratory for Deep Processing of Major Grain and OilWuhan Polytechnic UniversityMinistry of EducationWuhan430023China
| | - Dean Shi
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
| | - Jun You
- Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityYouyi Road 368Wuhan430062China
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22
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Yang Z, Huang T, Cao P, Cui Y, Nie J, Chen T, Yang H, Wang F, Sun L. Carbonized Silk Nanofibers in Biodegradable, Flexible Temperature Sensors for Extracellular Environments. ACS APPLIED MATERIALS & INTERFACES 2022; 14:18110-18119. [PMID: 35435678 DOI: 10.1021/acsami.2c00384] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Temperature is one of the key parameters for activity of cells. The trade-off between sensitivity and biocompatibility of cell temperature measurement is a challenge for temperature sensor development. Herein, a highly sensitive, biocompatible, and degradable temperature sensor was proposed to detect the living cell extracellular environments. Biocompatible silk materials were applied as sensing and packing layers, which endow the device with biocompatibility, biodegradability, and flexibility. The silk-based temperature sensor presented a sensitivity of 1.75%/°C and a working range of 35-63 °C with the capability to measure the extracellular environments. At the bending state, this sensor worked at promising response of cells at different temperatures. The applications of this developed silk material-based temperature sensor include biological electronic devices for cell manipulation, cell culture, and cellular metabolism.
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Affiliation(s)
- Zhan Yang
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
| | - Ting Huang
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
| | - Peidong Cao
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
| | - Yangchen Cui
- School of Public Health, Medical College of Soochow University, Soochow University, Suzhou 215131, China
| | - Jihua Nie
- School of Public Health, Medical College of Soochow University, Soochow University, Suzhou 215131, China
| | - Tao Chen
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
| | - Hao Yang
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
| | - Fengxia Wang
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
| | - Lining Sun
- Jiangsu Provincial Key Laboratory of Advanced Robotics, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China
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Lu H, Xia K, Jian M, Liang X, Yin Z, Zhang M, Wang H, Wang H, Li S, Zhang Y. Mechanically Reinforced Silkworm Silk Fiber by Hot Stretching. Research (Wash D C) 2022; 2022:9854063. [PMID: 35445199 PMCID: PMC8992573 DOI: 10.34133/2022/9854063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 03/03/2022] [Indexed: 11/28/2022] Open
Abstract
Silkworm silk, which is obtained from domesticated Bombyx mori (B. mori), can be produced in a large scale. However, the mechanical properties of silkworm silk are inferior to its counterpart, spider dragline silk. Therefore, researchers are continuously exploring approaches to reinforce silkworm silk. Herein, we report a facile and scalable hot stretching process to reinforce natural silk fibers obtained from silkworm cocoons. Experimental results show that the obtained hot-stretched silk fibers (HSSFs) retain the chemical components of the original silk fibers while being endowed with increased β-sheet nanocrystal content and crystalline orientation, leading to enhanced mechanical properties. Significantly, the average modulus of the HSSFs reaches 21.6 ± 2.8 GPa, which is about twice that of pristine silkworm silk fibers (11.0 ± 1.7 GPa). Besides, the tensile strength of the HSSFs reaches 0.77 ± 0.13 GPa, which is also obviously higher than that of the pristine silk (0.56 ± 0.08 GPa). The results show that the hot stretching treatment is effective and efficient for producing superstiff, strong, and tough silkworm silk fibers. We anticipate this approach may be also effective for reinforcing other natural or artificial polymer fibers or films containing abundant hydrogen bonds.
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Affiliation(s)
- Haojie Lu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Kailun Xia
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Muqiang Jian
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xiaoping Liang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zhe Yin
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Mingchao Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huimin Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Haomin Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Shuo Li
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yingying Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
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24
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Structure of Animal Silks. Methods Mol Biol 2022; 2347:3-15. [PMID: 34472050 DOI: 10.1007/978-1-0716-1574-4_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
As an abundant fibrous protein, animal silks have received a variety of interests in both traditional and high-tech industries, such as textiles, decoration, and biomedicine, due to their unique advantages in mechanical performance, sustainability, biocompatibility, and biodegradability. While developing applications of animal silks, the structure of animal silks has also received more and more attention in these decades. Briefly, most animal silks can be considered as semicrystalline fibers, which are composed of β-sheet nanocrystals and amorphous regions. However, different animal silks have similarities and also have obvious differences at different structural levels. In this chapter, we will introduce the structures of the three most representative animal silks, that is, spider dragline silk, tussah silk, and mulberry silk. The similarities and differences in their structures will be highlighted, so as to provide fundamental guidance for the research and use of these animal silks.
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25
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Li C, Wu J, Shi H, Xia Z, Sahoo JK, Yeo J, Kaplan DL. Fiber-Based Biopolymer Processing as a Route toward Sustainability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105196. [PMID: 34647374 PMCID: PMC8741650 DOI: 10.1002/adma.202105196] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/04/2021] [Indexed: 05/02/2023]
Abstract
Some of the most abundant biomass on earth is sequestered in fibrous biopolymers like cellulose, chitin, and silk. These types of natural materials offer unique and striking mechanical and functional features that have driven strong interest in their utility for a range of applications, while also matching environmental sustainability needs. However, these material systems are challenging to process in cost-competitive ways to compete with synthetic plastics due to the limited options for thermal processing. This results in the dominance of solution-based processing for fibrous biopolymers, which presents challenges for scaling, cost, and consistency in outcomes. However, new opportunities to utilize thermal processing with these types of biopolymers, as well as fibrillation approaches, can drive renewed opportunities to bridge this gap between synthetic plastic processing and fibrous biopolymers, while also holding sustainability goals as critical to long-term successful outcomes.
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Affiliation(s)
- Chunmei Li
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Junqi Wu
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Haoyuan Shi
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca NY 14853, USA
| | - Zhiyu Xia
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Jingjie Yeo
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca NY 14853, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
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26
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Chen M, Qin J, Lu S, Zhang F, Zuo B. Robust Nanofiber Mats Exfoliated From Tussah Silk for Potential Biomedical Applications. Front Bioeng Biotechnol 2021; 9:746016. [PMID: 34926415 PMCID: PMC8677428 DOI: 10.3389/fbioe.2021.746016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/08/2021] [Indexed: 02/05/2023] Open
Abstract
Nanofibers as elements for bioscaffolds are pushing the development of tissue engineering. In this study, tussah silk was mechanically disintegrated into nanofibers dispersed in aqueous solution which was cast to generate tussah silk fibroin (TSF) nanofiber mats. The effect of treatment time on the morphology, structure, and mechanical properties of nanofiber mats was examined. SEM indicated decreasing diameter of the nanofiber with shearing time, and the diameter of the nanofiber was 139.7 nm after 30 min treatment. These nanofiber mats exhibited excellent mechanical properties; the breaking strength increased from 26.31 to 72.68 MPa with the decrease of fiber diameter from 196.5 to 139.7 nm. The particulate debris was observed on protease XIV degraded nanofiber mats, and the weight loss was greater than 10% after 30 days in vitro degradation. The cell compatibility experiment confirmed adhesion and spreading of NIH-3T3 cells and enhanced cell proliferation on TSF nanofiber mats compared to that on Bombyx mori silk nanofiber mats. In conclusion, results indicate that TSF nanofiber mats prepared in this study are mechanically robust, slow biodegradable, and biocompatible materials, and have promising application in regenerative medicine.
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Affiliation(s)
- Ming Chen
- The Affiliated Stomatological Hospital of Soochow University, Suzhou Stomatological Hospital, Suzhou, China
- College of Textile and Clothing Engineering, Soochow University, National Engineering Laboratory for Modern Silk, Suzhou, China
| | - Jianzhong Qin
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
- State Key Laboratory of Biotherapy, West China Hospital, West China Medicine School, Sichuan University, Chengdu, China
| | - Shijun Lu
- The Affiliated Stomatological Hospital of Soochow University, Suzhou Stomatological Hospital, Suzhou, China
| | - Feng Zhang
- College of Textile and Clothing Engineering, Soochow University, National Engineering Laboratory for Modern Silk, Suzhou, China
| | - Baoqi Zuo
- College of Textile and Clothing Engineering, Soochow University, National Engineering Laboratory for Modern Silk, Suzhou, China
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27
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Ejimofor M, Ezemagu I, Menkiti M. Physiochemical, Instrumental and thermal characterization of the post coagulation sludge from paint industrial wastewater treatment. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1016/j.sajce.2021.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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28
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Zhang Y, Han F, Fan S, Zhang Y. Low-Power and Tunable-Performance Biomemristor Based on Silk Fibroin. ACS Biomater Sci Eng 2021; 7:3459-3468. [PMID: 34165975 DOI: 10.1021/acsbiomaterials.1c00513] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Biomemristors have attracted significant attention because of their potential applications in logic operations, nonvolatile memory, and synaptic emulators, thus leading to the urgent need to improve memristive performance. In this work, a silk fibroin (SF)-based memristor, integrated with both low power and low operating current simultaneously, has been reported. Doping the SF with Ag and an ethanol-based post-treatment promote microcrystal formation in the bulk of the SF. This induces carrier transport along fixed, short paths and results in a low set voltage, low operating current, and high memristive stability. Such performances can greatly reduce power consumption and heat generation, beneficial for the accuracy and durability of memristor devices. The memristive mechanism of SF-based memristors with different Ag contents is the space-charge-limited conduction (SCLC) mechanism. In addition, the nonlinear transmission property of SF-based memristors suggests useful applications in bioelectronics.
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Affiliation(s)
- Yi Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Fang Han
- College of Information Science and Technology, Donghua University, Shanghai 201620, P. R. China
| | - Suna Fan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Yaopeng Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
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29
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Hu Z, Yan S, Li X, You R, Zhang Q, Kaplan DL. Natural Silk Nanofibril Aerogels with Distinctive Filtration Capacity and Heat-Retention Performance. ACS NANO 2021; 15:8171-8183. [PMID: 33848124 DOI: 10.1021/acsnano.1c00346] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Nanofibrous aerogels have been extensively developed as multifunctional substrates in a wide range of fields. Natural silk nanofibrils (SNFs) are an appealing biopolymer due to their natural abundance, mechanical toughness, biodegradability, and excellent biocompatibility. However, fabricating 3D SNF materials with mechanical flexibility remains a challenge. Herein, SNF-based aerogels with controlled structures and well mechanical resilience were prepared. SNFs were extracted from silkworm silks by mechanical disintegration based on an all-aqueous system. The nanofibrils network and hierarchical cellular structure of the aerogels were tuned by the assembly of SNFs and foreign poly(vinyl alcohol) (PVA). The SNF aerogels exhibited an ultralow density (as low as 2.0 mg·cm-3) and well mechanical properties with a structure allowing for large deformations. These SNF aerogels demonstrated a reversible compression and stress retention after 100 cycles of compression. Furthermore, the resulting aerogels were used for air filtration and showed efficient filtration performance with a high dust-holding capacity and low resistance. Moreover, an extremely low thermal conductivity of 0.028 W·(m·K)-1 was achieved by the aerogel, showing its potential for use in heat-retention applications. This study provides a useful strategy for exploring the use of natural silks in 3D aerogels and offers options for developing filtration materials and ultralight heat-retention materials.
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Affiliation(s)
- Zhanao Hu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Shuqin Yan
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Xiufang Li
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Renchuan You
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Qiang Zhang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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30
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Wang HY, Zhang YQ, Wei ZG. Dissolution and processing of silk fibroin for materials science. Crit Rev Biotechnol 2021; 41:406-424. [PMID: 33749463 DOI: 10.1080/07388551.2020.1853030] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In recent decades, silk fibroin (SF) from silkworm Bombyx mori has been extensively researched and applied in several fields, including: cosmetics, biomedicine and biomaterials. The dissolution and regeneration of SF fibers is the key and prerequisite step for the application of silk protein-based materials. Various solvents and dissolving systems have been reported to dissolve SF fibers. However, the dissolution process directly affects the characteristics of SF and particularly impacts the mechanical properties of the resulting silk biomaterials in subsequent processing. The purpose of this review is to summarize the common solvents, the dissolution methods for silk protein, the properties of the resulting SF protein. The suitable use of SF dissolved in the corresponding solvent was also briefly introduced. Recent applications of SF in various biomaterials are also discussed.
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Affiliation(s)
- Hai-Yan Wang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China
| | - Yu-Qing Zhang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China
| | - Zheng-Guo Wei
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China
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31
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Yang K, Zhou Y, Wang Z, Li M, Shi D, Wang X, Jiang T, Zhang Q, Ding B, You J. Pseudosolvent Intercalator of Chitin: Self-Exfoliating into Sub-1 nm Thick Nanofibrils for Multifunctional Chitinous Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007596. [PMID: 33538009 DOI: 10.1002/adma.202007596] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Traditionally, energy-intensive and time-consuming postmechanical disintegration processes are inevitable in extracting biopolymer nanofibrils from natural materials and thereby hinder their practical applications. Herein, a new, convenient, scalable, and energy-efficient method for exfoliating nanofibrils (ChNFs) from various chitin sources via pseudosolvent-assisted intercalation process is proposed. These self-exfoliated ChNFs possess controllable thickness from 2.2 to 0.8 nm, average diameter of 4-5 nm, high aspect ratio up to 103 and customized surface chemistries. Particularly, compared with elementary nanofibrils, ChNFs with few molecular layers thick exhibit greater potential to construct high-performance structural materials, e.g., ductile nanopapers with large elongation up to 70.1% and toughness as high as 30.2 MJ m-3 , as well as soft hydrogels with typical nonlinear elasticity mimicking that of human-skin. The proposed self-exfoliation concept with unique advantages in the combination of high yield, energy efficiency, scalable productivity, less equipment requirements, and mild conditions opens up a door to extract biopolymer nanofibrils on an industrial scale. Moreover, the present modular ChNFs exfoliation will facilitate researchers to study the effect of thickness on the properties of nanofibrils and provide more insight into the structure-function relationship of biopolymer-based materials.
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Affiliation(s)
- Kaihua Yang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Youshuang Zhou
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Zengbing Wang
- CAS Key Lab of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao, 266101, P. R. China
| | - Mingjie Li
- CAS Key Lab of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao, 266101, P. R. China
| | - Dean Shi
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Xianbao Wang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Tao Jiang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Qunchao Zhang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Beibei Ding
- Key Laboratory for Deep Processing of Major Grain and Oil, College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Jun You
- Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuhan, 430062, China
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32
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Zhu J, Wu H, Wang D, Ma Y, Jia L. A Facile Strategy for Fabrication Lysozyme-Loaded Mesoporous Silica Nanotubes from Electrospun Silk Fibroin Nanofiber Templates. Molecules 2021; 26:molecules26041073. [PMID: 33670610 PMCID: PMC7923156 DOI: 10.3390/molecules26041073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/09/2021] [Accepted: 02/12/2021] [Indexed: 11/16/2022] Open
Abstract
This paper presents a facile and low-cost strategy for fabrication lysozyme-loaded mesoporous silica nanotubes (MSNTs) by using silk fibroin (SF) nanofiber templates. The “top-down method” was adopted to dissolve degummed silk in CaCl2/ formic acid (FA) solvent, and the solution containing SF nanofibrils was used for electrospinning to prepare SF nanofiber templates. As SF contains a large number of -OH, -NH2 and -COOH groups, the silica layer could be easily formed on its surface by the Söber sol-gel method without adding any surfactant or coupling agent. After calcination, the MSNTs were obtained with inner diameters about 200 nm, the wall thickness ranges from 37 ± 2 nm to 66 ± 3 nm and the Brunauer–Emmett–Teller (BET) specific surface area was up to 200.48 m2/g, the pore volume was 1.109 cm3/g. By loading lysozyme, the MSNTs exhibited relatively high drug encapsulation efficiency up to 31.82% and an excellent long-term sustained release in 360 h (15 days). These results suggest that the MSNTs with the hierarchical structure of mesoporous and macroporous will be a promising carrier for applications in biomacromolecular drug delivery systems.
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Affiliation(s)
- Jingxin Zhu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (H.W.); (Y.M.); (L.J.)
- Correspondence: ; Tel.: +86-351-6010-021
| | - Haijuan Wu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (H.W.); (Y.M.); (L.J.)
| | - Ding Wang
- BOE Photoelectricity Technology Co., Ltd., Chengdu 611731, China;
| | - Yanlong Ma
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (H.W.); (Y.M.); (L.J.)
| | - Lan Jia
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (H.W.); (Y.M.); (L.J.)
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33
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Xie X, Zheng Z, Wang X, Lee Kaplan D. Low-Density Silk Nanofibrous Aerogels: Fabrication and Applications in Air Filtration and Oil/Water Purification. ACS NANO 2021; 15:1048-1058. [PMID: 33439624 DOI: 10.1021/acsnano.0c07896] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A method was developed to fabricate light, water-insoluble silk fibroin nanofibrous aerogels (SNFAs) through solvent welding of lyophilized silk nanofibrous 3D networks at the junction points while converting silk structures from random-coils to β-sheets (water insoluble). Aromatic alcohols, especially phenethyl alcohol (PEA), supported robust solvent welding and the structural conversion of silk. PEA vapor treatment was a better approach than solvent infusion to retain volume, density, and mechanical strength of the SNFAs. The mechanical properties of highly orientated SNFAs were superior to randomly distributed fibers. The SNFAs had a low density (3.5 mg/cm3), high hydrophobicity (140.9°), and a porous surface morphology on the individual nanofibers, resulting in high efficiency and selectivity for absorbing particulate matter and oils. Compared with commonly used inorganic aerogels, the SNFAs developed in this study are biocompatible, easily functionalized, environmentally friendly, and low-cost and therefore have potential for air and water purification, biosensors, drug delivery, and tissue engineering.
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Affiliation(s)
- Xusheng Xie
- National Engineering Laboratory for Modern Silk, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu Province 215123, P.R. China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu Province 215123, P.R. China
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu Province 215123, P.R. China
| | - David Lee Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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34
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Pei Y, Jordan KE, Xiang N, Parker RN, Mu X, Zhang L, Feng Z, Chen Y, Li C, Guo C, Tang K, Kaplan DL. Liquid-Exfoliated Mesostructured Collagen from the Bovine Achilles Tendon as Building Blocks of Collagen Membranes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3186-3198. [PMID: 33398989 DOI: 10.1021/acsami.0c20330] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Mesoscaled assemblies are organized in native collagen tissues to achieve remarkable and diverse performance and functions. In this work, a facile, low-cost, and controllable liquid exfoliation method was applied to directly extract these collagen mesostructures from bovine Achilles tendons using a sodium hydroxide (NaOH)/urea aqueous system with freeze-thaw cycles and sonication. A series of collagen fibrils with diameters of 26-230 nm were harvested using this process, and in situ observations under polarizing microscopy (POM) and using molecular dynamics simulations revealed the influence of the NaOH/urea system on the tendon collagen. FTIR and XRD results confirmed that these collagen fibrils preserved typical structural characteristics of type I collagen. These isolated collagen fibrils were then utilized as building blocks to fabricate free-standing collagen membranes, which exhibited good stability in solvents and outstanding mechanical properties and transparency, with potential for utility in optical and electronic sensors. Moreover, in vitro and vivo evaluations demonstrated that these new resulting collagen membranes had good cytocompatibility, biocompatibility, and degradability for potential applications in biomedicine. This work provides a new approach for collagen processing by liquid exfoliation with utility for the formation of robust collagen materials that consist of native collagen mesostructures as building blocks.
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Affiliation(s)
- Ying Pei
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Kathryn E Jordan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Ning Xiang
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Rachael N Parker
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Xuan Mu
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Luan Zhang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhibin Feng
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Ying Chen
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Chunmei Li
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Chengchen Guo
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
- School of Engineering, Westlake University, Hangzhou, Zhejiang 310012, China
| | - Keyong Tang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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Bai L, Li Q, Yang Y, Ling S, Yu H, Liu S, Li J, Chen W. Biopolymer Nanofibers for Nanogenerator Development. RESEARCH (WASHINGTON, D.C.) 2021; 2021:1843061. [PMID: 33709081 PMCID: PMC7926511 DOI: 10.34133/2021/1843061] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/05/2021] [Indexed: 11/23/2022]
Abstract
The development of nanogenerators (NGs) with optimal performances and functionalities requires more novel materials. Over the past decade, biopolymer nanofibers (BPNFs) have become critical sustainable building blocks in energy-related fields because they have distinctive nanostructures and properties and can be obtained from abundant and renewable resources. This review summarizes recent advances in the use of BPNFs for NG development. We will begin by introducing various strategies for fabricating BPNFs with diverse structures and performances. Then, we will systematically present the utilization of polysaccharide and protein nanofibers for NGs. We will mainly focus on the use of BPNFs to generate bulk materials with tailored structures and properties for assembling of triboelectric and piezoelectric NGs. The use of BPNFs to construct NGs for the generation of electricity from moisture and osmosis is also discussed. Finally, we illustrate our personal perspectives on several issues that require special attention with regard to future developments in this active field.
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Affiliation(s)
- Lulu Bai
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Qing Li
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Ya Yang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haipeng Yu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Shouxin Liu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Jian Li
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Wenshuai Chen
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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Zha X, Xiong X, Chen C, Li Y, Zhang L, Xie H, Jiang Q. Usnic-Acid-Functionalized Silk Fibroin Composite Scaffolds for Cutaneous Wounds Healing. Macromol Biosci 2020; 21:e2000361. [PMID: 33369081 DOI: 10.1002/mabi.202000361] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/01/2020] [Indexed: 12/17/2022]
Abstract
Despite the progress in chronic wound treatment, antibacterial cutaneous scaffold with high efficiency in wound healing is still the hot spot in the field. In present study, a functionalized silk fibroin (SF) cutaneous scaffold incorporated with natural medicine usnic acid (UA) is investigated, in which UA is used as an antibacterial and wound-healing reagent. Via electrospinning, UA-SF mixture is fabricated into UA-SF composite scaffold (USCS), which is composed of uniform nanofibers with average diameters of around 360 ± 10 nm. The interwoven nanofibers form mesh structure providing sufficient moisture permeability for scaffold. With methanol treatment, USCS presents improved mechanical properties and stability to protease XIV. In the presence of USCS, the growth rate of both Gram-positive and Gram-negative bacteria, including Staphylococcus aureus, Streptococci pyogenes, Escherichia coli, and Pseudomonas aeruginosa, is significantly inhibited in plate culture and suspension assays. In a cutaneous excisional mouse wound model, USCS presents a significant increase of wound closure rate, compared with pure SF scaffold and commercial dressing, Tegaderm Hydrocolloid 3M . The histological assessments further prove that USCS can enhance re-epithelialization, vascularization, and collagen deposition in wound site to promote the wound-healing process, which indicates the potential application of USCS in chronic wound treatment.
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Affiliation(s)
- Xiaoying Zha
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Xingliang Xiong
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Cheng Chen
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Yang Li
- Department of Medical Equipment, Yubei District People's Hospital, Chongqing, 401120, China
| | - Lingqin Zhang
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Haojiang Xie
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Qifeng Jiang
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
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Li L, Yang H, Li X, Yan S, Xu A, You R, Zhang Q. Natural silk nanofibrils as reinforcements for the preparation of chitosan-based bionanocomposites. Carbohydr Polym 2020; 253:117214. [PMID: 33278979 DOI: 10.1016/j.carbpol.2020.117214] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/27/2020] [Accepted: 10/06/2020] [Indexed: 12/14/2022]
Abstract
Nanofibrils derived from natural biopolymers have received extensive interest due to their exceptional mechanical properties and excellent biocompatibility. To fabricate biocompatible chitosan nanocomposites with high mechanical performance, silkworm silks were deconstructed into nanofibrils as structural and mechanical reinforcement of chitosan. After dispersing silk nanofibrils in chitosan solution, a set of nanocomposites, including film, porous scaffold, filament, and nanofibrous sponge, could be fabricated from the blended solutions. Silk nanofibrils could be uniformly dispersed in chitosan solution, and formed multi-dimensional nanocomposites. The nanocomposites exhibited enhanced mechanical strength and thermal stability, and provided a biomimetic nanofibrous structure for biomaterial applications. The enhancement in mechanical properties can be attributed to the interaction between the nanofibril phase and the chitosan matrix. As the polysaccharide/protein bionanocomposites derived from natural biopolymers, these materials offer new opportunities for biomaterial application by virtue of their biocompatibility and biodegradability, as well as enhanced mechanical properties and controllable mesoscopic structure.
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Affiliation(s)
- Liang Li
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Hui Yang
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Xiufang Li
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Shuqin Yan
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Anchang Xu
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Renchuan You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China.
| | - Qiang Zhang
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China.
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Yang W, Lv L, Li X, Han X, Li M, Li C. Quaternized Silk Nanofibrils for Electricity Generation from Moisture and Ion Rectification. ACS NANO 2020; 14:10600-10607. [PMID: 32806080 DOI: 10.1021/acsnano.0c04686] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Protein nanostructures in living organisms have attracted intense interests in biology and material science owing to their intriguing abilities to harness ion transportation for matter/signal transduction and bioelectricity generation. Silk nanofibrils, serving as the fundamental building blocks for silk, not only have the advantages of natural abundance, low cost, biocompatibility, sustainability, and degradability but also play a key role in mechanical toughness and biological functions of silk fibers. Herein, cationic silk nanofibrils (SilkNFs), with an ultrathin thickness of ∼4 nm and a high aspect ratio up to 500, were successfully exfoliated from natural cocoon fibers via quaternization followed by mechanical homogenization. Being positively charged in a wide pH range of 2-12, these cationic SilkNFs could combine with different types of negatively charged biological nanofibrils to produce asymmetric ionic membranes and aerogels that have the ability to tune ion translocation. The asymmetric ionic aerogels could create an electric potential as high as 120 mV in humid ambient air, whereas asymmetric ionic membranes could be used in ionic rectification with a rectification ratio of 5.2. Therefore, this green exfoliation of cationic SilkNFs may provide a biological platform of nanomaterials for applications as diverse as ion electronics, renewable energy, and sustainable nanotechnology.
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Affiliation(s)
- Weiqing Yang
- Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, P.R. China
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, Shandong 266071, P.R. China
| | - Lili Lv
- Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, P.R. China
- Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P.R. China
| | - Xiankai Li
- Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, P.R. China
- Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P.R. China
| | - Xiao Han
- Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, P.R. China
- Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P.R. China
| | - Mingjie Li
- Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, P.R. China
- Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P.R. China
| | - Chaoxu Li
- Group of Biomimetic Smart Materials, CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, P.R. China
- Center of Material and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P.R. China
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Ma L, Liu Q, Wu R, Meng Z, Patil A, Yu R, Yang Y, Zhu S, Fan X, Hou C, Li Y, Qiu W, Huang L, Wang J, Lin N, Wan Y, Hu J, Liu XY. From Molecular Reconstruction of Mesoscopic Functional Conductive Silk Fibrous Materials to Remote Respiration Monitoring. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000203. [PMID: 32452630 DOI: 10.1002/smll.202000203] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 04/05/2020] [Accepted: 04/16/2020] [Indexed: 05/28/2023]
Abstract
Turning insulating silk fibroin materials into conductive ones turns out to be the essential step toward achieving active silk flexible electronics. This work aims to acquire electrically conductive biocompatible fibers of regenerated Bombyx mori silk fibroin (SF) materials based on carbon nanotubes (CNTs) templated nucleation reconstruction of silk fibroin networks. The electronical conductivity of the reconstructed mesoscopic functional fibers can be tuned by the density of the incorporated CNTs. It follows that the hybrid fibers experience an abrupt increase in conductivity when exceeding the percolation threshold of CNTs >35 wt%, which leads to the highest conductivity of 638.9 S m-1 among organic-carbon-based hybrid fibers, and 8 times higher than the best available materials of the similar types. In addition, the silk-CNT mesoscopic hybrid materials achieve some new functionalities, i.e., humidity-responsive conductivity, which is attributed to the coupling of the humidity inducing cyclic contraction of SFs and the conductivity of CNTs. The silk-CNT materials, as a type of biocompatible electronic functional fibrous material for pressure and electric response humidity sensing, are further fabricated into a smart facial mask to implement respiration condition monitoring for remote diagnosis and medication.
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Affiliation(s)
- Liyun Ma
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, P. R. China
- College of Textile and Clothing, Xinjiang University, Urumqi, 830000, P. R. China
| | - Qiang Liu
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
- Institute of Advanced Materials, East China JiaoTong University, Nanchang, 330013, P. R. China
| | - Ronghui Wu
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, P. R. China
- Department of Physics, Faculty of Science, National University of Singapore, Singapore, 117542, Singapore
| | - Zhaohui Meng
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Aniruddha Patil
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Rui Yu
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Yun Yang
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Shuihong Zhu
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Xuwei Fan
- Department of Information and Communication Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Chen Hou
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Yanran Li
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Wu Qiu
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Lianfen Huang
- Department of Information and Communication Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Jun Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, P. R. China
| | - Naibo Lin
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
| | - Yizao Wan
- Institute of Advanced Materials, East China JiaoTong University, Nanchang, 330013, P. R. China
| | - Jian Hu
- Institute of Advanced Materials, East China JiaoTong University, Nanchang, 330013, P. R. China
| | - Xiang Yang Liu
- Research Institution for Biomimetics and Soft Matter, College of Physical Science and Technology, College of Materials, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, Xiamen University, Xiamen, 361005, P. R. China
- Institute of Advanced Materials, East China JiaoTong University, Nanchang, 330013, P. R. China
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Yang K, Guan J, Shao Z, Ritchie RO. Mechanical properties and toughening mechanisms of natural silkworm silks and their composites. J Mech Behav Biomed Mater 2020; 110:103942. [PMID: 32957236 DOI: 10.1016/j.jmbbm.2020.103942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 04/19/2020] [Accepted: 06/17/2020] [Indexed: 01/26/2023]
Abstract
There is an emerging interest in natural silkworm silks as alternative reinforcement for engineering composites. Here, we summarize the research on two common silkworm silks and silk fibre reinforced plastics (SFRPs) from the authors over the past few years in the context of related research. Silk fibres from silkworms display good strength and toughness under ambient and cryogenic conditions owing to their elastic-plastic deformation mechanism. In particular, the wild Antheraea pernyi (A. pernyi) silk also displays micro- and nano-fibrillation as an important mechanism for toughness and impact resistance. For SFRP composites, we found: (i) it is critical to achieve silk fibre volume fraction to above 50% for an optimal reinforcement and toughening effect; (ii) the tougher A. pernyi silks present a better reinforcement and toughening agent than B. mori silks; (iii) impact and toughness properties are advantageous properties of SFRPs; (iv) hybridization of natural silk with other fibres can further improve the mechanical performance and economics of SFRPs for engineering applications; and (v) the lightweight structure designs can improve the service efficiency of SFRPs for energy absorption. The understanding on the comprehensive mechanical properties and the toughening mechanisms of silks and silk fibre-reinforced polymer composites (SFRPs) could provide key insights into material design and applications.
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Affiliation(s)
- Kang Yang
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science and Engineering, Beihang University, Beijing, 100191, China; Biomechanics and Soft Robotics Lab, Beihang University, Beijing, 100191, China
| | - Juan Guan
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science and Engineering, Beihang University, Beijing, 100191, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beijing, 100083, China.
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China.
| | - Robert O Ritchie
- Materials Sciences Division, Lawrence Berkeley National Laboratory and Department of Materials Science & Engineering, University of California, Berkeley, CA94720, USA.
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Li D, Fan Y, Han G, Guo Z. Superomniphobic Silk Fibroin/Ag Nanowires Membrane for Flexible and Transparent Electronic Sensor. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10039-10049. [PMID: 32017854 DOI: 10.1021/acsami.9b23378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Superwetting surfaces that repel various liquids have been exciting for biomimetic research and have displayed versatile potential applications. Generally, superhydrophobic coatings can allow for droplet rolling off and antifouling, whereas it is a challenge to achieve superomniphobic surfaces with transparency, flexibility, and conductivity. Here, we adopt an effective and simple method to fabricate a superomniphobic, transparent, and flexible smart silk fibroin (SF) membrane by spray-coating long AgNWs dispersed in polydimethylsiloxane (PDMS), followed by treatment with vacuum drying. The resulting SF/AgNWs membranes are super-repellent to different liquids with low surface tension and water, and demonstrate high contact angles (CAs) more than 150° and low rolling-off angles (RAs) even less than 10°. Moreover, the obtained membranes display superior sensitivity under stretching and bending, as well as intact stability of high transparency, which can be considered as promising flexible sensing electronics to detect human motions under wet conditions.
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Affiliation(s)
- Deke Li
- School of Materials Engineering , Lanzhou Institute of Technology , Lanzhou 730050 , People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , People's Republic of China
| | - Yufeng Fan
- School of Materials Engineering , Lanzhou Institute of Technology , Lanzhou 730050 , People's Republic of China
| | - Guocai Han
- School of Materials Engineering , Lanzhou Institute of Technology , Lanzhou 730050 , People's Republic of China
| | - Zhiguang Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials , Hubei University , Wuhan 430062 , People's Republic of China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , People's Republic of China
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Jian M, Zhang Y, Liu Z. Natural Biopolymers for Flexible Sensing and Energy Devices. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2379-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Liang Y, Allardyce BJ, Kalita S, Uddin MG, Shafei S, Perera D, Remadevi RCN, Redmond SL, Batchelor WJ, Barrow CJ, Dilley RJ, Schniepp HC, Wang X, Rajkhowa R. Protein Paper from Exfoliated Eri Silk Nanofibers. Biomacromolecules 2020; 21:1303-1314. [DOI: 10.1021/acs.biomac.0c00097] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yujia Liang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | | | - Sanjeeb Kalita
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Mohammad Gias Uddin
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Sajjad Shafei
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Dinidu Perera
- Department of Applied Science, College of William and Mary, Williamsburg, Virginia 23187-8795, United States
| | | | - Sharon Leanne Redmond
- Ear Science Institute Australia and Ear Sciences Centre, School of Medicine, University of Western Australia, Nedlands, Western Australia 6008, Australia
| | - Warren Jeffrey Batchelor
- Bioresource Processing Institute of Australia, Department of Chemical Engineering, Monash University, Melbourne, Victoria 3800, Australia
| | - Colin J. Barrow
- Life and Environmental Sciences, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Rodney J. Dilley
- Ear Science Institute Australia and Ear Sciences Centre, School of Medicine, University of Western Australia, Nedlands, Western Australia 6008, Australia
| | - Hannes C. Schniepp
- Department of Applied Science, College of William and Mary, Williamsburg, Virginia 23187-8795, United States
| | - Xungai Wang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Rangam Rajkhowa
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
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Yu Y, Mu Z, Jin B, Liu Z, Tang R. Organic–Inorganic Copolymerization for a Homogenous Composite without an Interphase Boundary. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yadong Yu
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Zhao Mu
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Biao Jin
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Zhaoming Liu
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Ruikang Tang
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
- State Key Laboratory for Silicon MaterialsZhejiang University Hangzhou Zhejiang 310027 China
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Meng L, Shao C, Cui C, Xu F, Lei J, Yang J. Autonomous Self-Healing Silk Fibroin Injectable Hydrogels Formed via Surfactant-Free Hydrophobic Association. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1628-1639. [PMID: 31800210 DOI: 10.1021/acsami.9b19415] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Many natural materials, such as silk, animal bone, nacre, and plant fibers, achieve outstanding strength and toughness through the rupture of sacrificial bonds between chain segments in the organic phase. In this work, we present a bioinspired strategy to fabricate silk fibroin-based hydrophobic-association (HA) hydrogels by incorporating the hydrophobic interaction as a sacrificial bond into the alginate ionic network, which not only enhanced the mechanical extensibility, strength, and toughness of the hydrogels but also enabled self-recovery and self-healing properties via reversible hydrophobic interactions without external stimuli at room temperature. The hydrophobic interaction system consisted of the hydrophobic monomer stearyl methacrylate (C18M) and an amphiphilic regenerated silk fibroin (RSF) solution. The mechanical tests and rheometry indicated that the hydrophobic interaction served as the sacrificial bond that preferentially ruptures prior to the alginate ionic network under an external load, which dissipated enormous amounts of energy and conferred an improved mechanical performance. Moreover, the structure of HA gels could be quickly recovered after injection due to the existence of hydrophobic interactions. In addition, the degradability of the HA gels in a protease XIV solution was strongly dependent upon the C18M component, which significantly promoted the degradation rate of HA gels. The biomimetic mineralization process of HA gels within a simulated body fluid (SBF), mimicking the inorganic composition of human blood plasma, was performed and the calcium phosphate nanoparticles on the hydrogel were observed. Importantly, in vivo experiments illustrated that the HA gels exhibited satisfactory biocompatibility, and the mouse osteoblasts (MC3T3-E1) could attach and spread on the hydrogels. Overall, the self-healing, biocompatibility, and high mechanical properties of the HA gels render them potentially suitable for load-bearing applications in drug delivery or other soft tissue-engineering applications.
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Affiliation(s)
- Lei Meng
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , Beijing 100083 , China
| | - Changyou Shao
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , Beijing 100083 , China
| | - Chen Cui
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , Beijing 100083 , China
| | - Feng Xu
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , Beijing 100083 , China
| | - Jiandu Lei
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , Beijing 100083 , China
| | - Jun Yang
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , Beijing 100083 , China
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Yu Y, Mu Z, Jin B, Liu Z, Tang R. Organic-Inorganic Copolymerization for a Homogenous Composite without an Interphase Boundary. Angew Chem Int Ed Engl 2019; 59:2071-2075. [PMID: 31777138 DOI: 10.1002/anie.201913828] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/21/2019] [Indexed: 12/12/2022]
Abstract
Ionic oligomers and their crosslinking implies a possibility to produce novel organic-inorganic composites by copolymerization. Using organic acrylamide monomers and inorganic calcium phosphate oligomers as precursors, uniformly structured polyacrylamide (PAM)-calcium phosphate copolymer is prepared by an organic-inorganic copolymerization. In contrast to the previous PAM-based composites by mixing inorganic components into polymers, the copolymerized material has no interphase boundary owing to the homogenous incorporation of the organic and inorganic units at molecular level, resulting in a complete and continuous hybrid network. The participation of the ionic binding effect in the crosslinking process can substantially improve the mechanical strength; the copolymer can reach a modulus and hardness of 35.14±1.91 GPa and 1.34±0.09 GPa, respectively, which are far superior to any other PAM-based composites.
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Affiliation(s)
- Yadong Yu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Zhao Mu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Biao Jin
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Zhaoming Liu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.,State Key Laboratory for Silicon Materials, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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Pang H, Zhao S, Mo L, Wang Z, Zhang W, Huang A, Zhang S, Li J. Mussel‐inspired bio‐based water‐resistant soy adhesives with low‐cost dopamine analogue‐modified silkworm silk Fiber. J Appl Polym Sci 2019. [DOI: 10.1002/app.48785] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Huiwen Pang
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
| | - Shujun Zhao
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
| | - Liuting Mo
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
| | - Zhong Wang
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
| | - Wei Zhang
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
| | - Anmin Huang
- Chinese Academy of Forestry Research Institute of Wood Industry Beijing 100091 People's Republic of China
| | - Shifeng Zhang
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
| | - Jianzhang Li
- MOE Key Laboratory of Wooden Material Science and ApplicationBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
- Beijing Key Laboratory of Wood Science and EngineeringBeijing Forestry University, No. 35 Tsinghua East Road, Haidian District Beijing 100083 People's Republic of China
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48
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Xu F, Ma F, Ding Z, Xiao L, Zhang X, Lu Q, Lu G, Kaplan DL. SERS Substrate with Silk Nanoribbons as Interlayer Template. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42896-42903. [PMID: 31682400 DOI: 10.1021/acsami.9b13543] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The formation of hot spots is an effective approach to improve the performance of surface-enhanced Raman scattering (SERS). Silk nanoribbons (SNRs), with a height of about 1-2 nm, and Au nanoparticles (AuNPs) were assembled by electrostatic interactions to introduce sandwich hot spot structures. These sandwich structures were optimized by tuning the ratio of SNRs and AuNPs, resulting in strong SERS signals with a sensitivity of 10-13 M and enhancement factor (EF) of 5.8 × 106. Improved SERS spectrum uniformity with relative standard deviation (RSD) about 11.2% was also achieved due to the homogeneous distribution of these hot spot structures. The inherent biocompatibility of SNRs and facile fabrication processes utilized endowed the SERS substrates significant benefits toward biomedical applications, confirmed by cytocompatibility and improved SERS bioimaging capacity in vitro. The results of this study suggest the feasibility of forming high performance bioimaging systems through the use of naturally derived materials with special nanostructures.
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Affiliation(s)
- Fengrui Xu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , 215123 Suzhou , People's Republic of China
| | - Fengguo Ma
- Key Laboratory of Rubber-plastics , Qingdao University of Science and Technology , 266042 Qingdao , People's Republic of China
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , 215123 Suzhou , People's Republic of China
- Department of Burns and Plastic Surgery , The Affiliated Hospital of Jiangnan University , Wuxi 214041 , People's Republic of China
| | - Liying Xiao
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , 215123 Suzhou , People's Republic of China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , 215123 Suzhou , People's Republic of China
| | - Qiang Lu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , 215123 Suzhou , People's Republic of China
- Department of Burns and Plastic Surgery , The Affiliated Hospital of Jiangnan University , Wuxi 214041 , People's Republic of China
| | - Guozhong Lu
- Department of Burns and Plastic Surgery , The Affiliated Hospital of Jiangnan University , Wuxi 214041 , People's Republic of China
| | - David L Kaplan
- Department of Biomedical Engineering , Tufts University , Medford , Massachusetts 02155 , United States
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Hang Y, Ma J, Li S, Zhang X, Liu B, Ding Z, Lu Q, Chen H, Kaplan DL. Structure–Chemical Modification Relationships with Silk Materials. ACS Biomater Sci Eng 2019; 5:2762-2768. [DOI: 10.1021/acsbiomaterials.9b00369] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yingjie Hang
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Jie Ma
- Department of Burns, Gansu Provincial Hospital, Lanzhou 730000, People’s Republic of China
| | - Siyuan Li
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bing Liu
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, People’s Republic of China
| | - Qiang Lu
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, People’s Republic of China
| | - Hong Chen
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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