1
|
Niu Z, Qu F, Chen F, Ma X, Chen B, Wang L, Xu M, Wang S, Jin L, Zhang C, Hou X. Multifunctional Integrated Organic-Inorganic-Metal Hybrid Aerogel for Excellent Thermal Insulation and Electromagnetic Shielding Performance. NANO-MICRO LETTERS 2024; 16:200. [PMID: 38782792 PMCID: PMC11116317 DOI: 10.1007/s40820-024-01409-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 03/28/2024] [Indexed: 05/25/2024]
Abstract
Vehicles operating in space need to withstand extreme thermal and electromagnetic environments in light of the burgeoning of space science and technology. It is imperatively desired to high insulation materials with lightweight and extensive mechanical properties. Herein, a boron-silica-tantalum ternary hybrid phenolic aerogel (BSiTa-PA) with exceptional thermal stability, extensive mechanical strength, low thermal conductivity (49.6 mW m-1 K-1), and heightened ablative resistance is prepared by an expeditious method. After extremely thermal erosion, the obtained carbon aerogel demonstrates noteworthy electromagnetic interference (EMI) shielding performance with an efficiency of 31.6 dB, accompanied by notable loading property with specific modulus of 272.8 kN·m kg-1. This novel design concept has laid the foundation for the development of insulation materials in more complex extreme environments.
Collapse
Affiliation(s)
- Zhaoqi Niu
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Fengjin Qu
- Spallation Neutron Source Science Center Institution, Dongguan, 523803, People's Republic of China
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Fang Chen
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Xiaoyan Ma
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China.
| | - Beixi Chen
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Luyao Wang
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Miao Xu
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Shumeng Wang
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China
| | - Liang Jin
- China Aerospace Science and Industry Corporation Sixth Academy, Hohhot, 022185, People's Republic of China
| | - Chengshuang Zhang
- Xi'an Aerospace Composites Research Institute, Xi'an, 710025, People's Republic of China
| | - Xiao Hou
- Ministry of Industry and Information Technology Key Laboratory of Special Function and Smart Polymer Materials, Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary Conditions, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China.
- China Aerospace Science and Technology Corporation, Beijing, 100037, People's Republic of China.
| |
Collapse
|
2
|
Parale VG, Kim T, Choi H, Phadtare VD, Dhavale RP, Kanamori K, Park HH. Mechanically Strengthened Aerogels through Multiscale, Multicompositional, and Multidimensional Approaches: A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307772. [PMID: 37916304 DOI: 10.1002/adma.202307772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/29/2023] [Indexed: 11/03/2023]
Abstract
In recent decades, aerogels have attracted tremendous attention in academia and industry as a class of lightweight and porous multifunctional nanomaterial. Despite their wide application range, the low mechanical durability hinders their processing and handling, particularly in applications requiring complex physical structures. "Mechanically strengthened aerogels" have emerged as a potential solution to address this drawback. Since the first report on aerogels in 1931, various modified synthesis processes have been introduced in the last few decades to enhance the aerogel mechanical strength, further advancing their multifunctional scope. This review summarizes the state-of-the-art developments of mechanically strengthened aerogels through multicompositional and multidimensional approaches. Furthermore, new trends and future directions for as prevailed commercialization of aerogels as plastic materials are discussed.
Collapse
Affiliation(s)
- Vinayak G Parale
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Taehee Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Haryeong Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Varsha D Phadtare
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Rushikesh P Dhavale
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Kazuyoshi Kanamori
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Hyung-Ho Park
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| |
Collapse
|
3
|
Tan V, Berg F, Maleki H. Diatom-inspired silicification process for development of green flexible silica composite aerogels. Sci Rep 2024; 14:6973. [PMID: 38521812 PMCID: PMC10960801 DOI: 10.1038/s41598-024-57257-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 03/15/2024] [Indexed: 03/25/2024] Open
Abstract
In this study, we have developed novel biomimetic silica composite aerogels and cryogels for the first time, drawing inspiration from the natural diatom's silicification process. Our biomimetic approach involved the modification of tyrosinase-mediated oxidized silk fibroin (SFO) surfaces with polyethyleneimine (PEI). This modification introduced ample amine groups onto the SF polymer, which catalyzed the silicification of the SFO-PEI gel surface with silicic acid. This process emulates the catalytic function of long-chain polyamines and silaffin proteins found in diatoms, resulting in a silica network structure on the primary SFO-PEI network gel's surface. The SFO-PEI gel matrix played a dual role in this process: (1) It provided numerous amine functional groups that directly catalyzed the silicification of silicic acid on the porous structure's exterior surface, without encapsulating the created silica network in the gel. (2) It served as a flexible mechanical support facilitating the creation of the silica network. As a result, the final ceramic composite exhibits a mechanically flexible nature (e.g., cyclic compressibility up to 80% strain), distinguishing it from conventional composite aerogels. By mimicking the diatom's silicification process, we were able to simplify the development of silica-polymer composite aerogels. It eliminates the need for surfactants, multi-step procedures involving solvent exchange, and gel washing. Instead, the reaction occurs under mild conditions, streamlining the composite aerogels fabrication process.
Collapse
Affiliation(s)
- Valerie Tan
- Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, Greinstresse 6, 50939, Cologne, Germany
| | - Florian Berg
- Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, Greinstresse 6, 50939, Cologne, Germany
| | - Hajar Maleki
- Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, Greinstresse 6, 50939, Cologne, Germany.
- Center for Molecular Medicine Cologne, CMMC Research Center, Robert-Koch-Str. 21, 50931, Cologne, Germany.
| |
Collapse
|
4
|
Guan F, Feng S, Sun J, Yang Q, Zhang Y, Li Z, Tao J, Ji X, Wang Y, Bao D, Guo J, Zhang S. Low-temperature superelastic, anisotropic, silane-crosslinked sodium alginate aerogel for thermal insulation. Int J Biol Macromol 2024; 262:129800. [PMID: 38296125 DOI: 10.1016/j.ijbiomac.2024.129800] [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: 11/28/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/13/2024]
Abstract
Bio-aerogels have attracted much attention owing to their remarkable properties, but their brittle and poor elasticity has limited their further applications. Here, we propose a strategy of in-situ silanization crosslinking combined with unidirectional freeze casting (SUFC) to prepare superelastic sodium alginate (SA) aerogels. The resulting aerogel was ultra-light (0.048 g/cm3), high porosity (96.86 %), and self-extinguishing from fire. Aerogels exhibited anisotropic properties, such as low-temperature elasticity (500 g compression at -70 °C 10-cycle, 99.6 % recovery), exceptional fatigue resistance (100-cycle at 50 % strain), and excellent thermal insulation (0.0696 W·m-1·K-1). Thus, the SUFC strategy provides considerable freedom for constructing multi-material, lamellar/honeycomb structured alginate-based aerogels, which pave the way to thermal insulation development at low temperatures.
Collapse
Affiliation(s)
- Fucheng Guan
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China; Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Wuhan 430200, China
| | - Shi Feng
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jianbin Sun
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Qiang Yang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yihang Zhang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Zheng Li
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jing Tao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Xinbin Ji
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yonghe Wang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Da Bao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jing Guo
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Sen Zhang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
| |
Collapse
|
5
|
Chang X, Wu F, Cheng X, Zhang H, He L, Li W, Yin X, Yu J, Liu YT, Ding B. Multiscale Interpenetrated/Interconnected Network Design Confers All-Carbon Aerogels with Unprecedented Thermomechanical Properties for Thermal Insulation under Extreme Environments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308519. [PMID: 37913824 DOI: 10.1002/adma.202308519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/26/2023] [Indexed: 11/03/2023]
Abstract
With ultralight weight, low thermal conductivity, and extraordinary high-temperature resistance, carbon aerogels hold tremendous potential against severe thermal threats encountered by hypersonic vehicles during the in-orbit operation and re-entry process. However, current 3D aerogels are plagued by irreconcilable contradictions between adiabatic and mechanical performance due to monotonicity of the building blocks or uncontrollable assembly behavior. Herein, a spatially confined assembly strategy of multiscale low-dimensional nanocarbons is reported to decouple the stress and heat transfer. The nanofiber framework, a basis for transferring the loading strain, is covered by a continuous thin-film-like layer formed by the aggregation of nanoparticles, which in combination serve as the fundamental structural units for generating an elastic behavior while yielding compartments in aerogels to suppress the gaseous fluid thermal diffusion within distinct partitions. The resulting all-carbon aerogels with a hierarchical cellular structure and quasi-closed cell walls achieve the best thermomechanical and insulation trade-off, exhibiting flyweight density (24 mg cm-3 ), temperature-constant compressibility (-196-1600 °C), and a low thermal conductivity of 0.04 829 W m-1 K-1 at 300 °C. This strategy provides a remarkable thermal protection material in hostile environments for future aerospace exploration.
Collapse
Affiliation(s)
- Xinyi Chang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Fan Wu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xiaota Cheng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Hao Zhang
- Aerospace Institute of Advanced Material & Processing Technology, Beijing, 100074, China
| | - Lijuan He
- Aerospace Institute of Advanced Material & Processing Technology, Beijing, 100074, China
| | - Wenjing Li
- Aerospace Institute of Advanced Material & Processing Technology, Beijing, 100074, China
| | - Xia Yin
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Yi-Tao Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai, 201620, China
| |
Collapse
|
6
|
Takeshita S, Ono T. Biopolymer-Polysiloxane Double Network Aerogels. Angew Chem Int Ed Engl 2023; 62:e202306518. [PMID: 37466360 DOI: 10.1002/anie.202306518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Indexed: 07/20/2023]
Abstract
A new series of transparent aerogels of biopolymer-polysiloxane double networks is reported. Biopolymer aerogels have attracted much attention from green and sustainable aspects but suffered from strong hydrophilicity and difficulty to make homogeneous structures in nanoscale; these drawbacks are overcome by compositing with a polysiloxane network. Alginate-polymethylsilsesquioxane aerogel has high optical transparency, water repellency, comparable superinsulation property and improved bending flexibility compared to pure polymethylsilsesquioxane aerogel. The nanoscale homogeneity is realized by separating the crosslinking steps for two networks in a sequential protocol: condensation of siloxane bonds and metal-crosslinking of biopolymer. The crosslinking order, biopolymer-first or siloxane-first, and universality/limitation of biopolymer-crosslinker pairs are discussed to construct fundamental chemistry of double network systems for their further application potentials.
Collapse
Affiliation(s)
- Satoru Takeshita
- Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, 3058565, Tsukuba, Japan
| | - Takumi Ono
- Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, 3058565, Tsukuba, Japan
| |
Collapse
|
7
|
Karamikamkar S, Yalcintas EP, Haghniaz R, de Barros NR, Mecwan M, Nasiri R, Davoodi E, Nasrollahi F, Erdem A, Kang H, Lee J, Zhu Y, Ahadian S, Jucaud V, Maleki H, Dokmeci MR, Kim H, Khademhosseini A. Aerogel-Based Biomaterials for Biomedical Applications: From Fabrication Methods to Disease-Targeting Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204681. [PMID: 37217831 PMCID: PMC10427407 DOI: 10.1002/advs.202204681] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Indexed: 05/24/2023]
Abstract
Aerogel-based biomaterials are increasingly being considered for biomedical applications due to their unique properties such as high porosity, hierarchical porous network, and large specific pore surface area. Depending on the pore size of the aerogel, biological effects such as cell adhesion, fluid absorption, oxygen permeability, and metabolite exchange can be altered. Based on the diverse potential of aerogels in biomedical applications, this paper provides a comprehensive review of fabrication processes including sol-gel, aging, drying, and self-assembly along with the materials that can be used to form aerogels. In addition to the technology utilizing aerogel itself, it also provides insight into the applicability of aerogel based on additive manufacturing technology. To this end, how microfluidic-based technologies and 3D printing can be combined with aerogel-based materials for biomedical applications is discussed. Furthermore, previously reported examples of aerogels for regenerative medicine and biomedical applications are thoroughly reviewed. A wide range of applications with aerogels including wound healing, drug delivery, tissue engineering, and diagnostics are demonstrated. Finally, the prospects for aerogel-based biomedical applications are presented. The understanding of the fabrication, modification, and applicability of aerogels through this study is expected to shed light on the biomedical utilization of aerogels.
Collapse
Affiliation(s)
| | | | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| | | | - Marvin Mecwan
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| | - Rohollah Nasiri
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| | - Elham Davoodi
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
- Department of Mechanical and Mechatronics EngineeringUniversity of WaterlooWaterlooONN2L 3G1Canada
| | - Fatemeh Nasrollahi
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
- Department of BioengineeringUniversity of California‐Los Angeles (UCLA)Los AngelesCA90095USA
| | - Ahmet Erdem
- Department of Biomedical EngineeringKocaeli UniversityUmuttepe CampusKocaeli41001Turkey
| | - Heemin Kang
- Department of Materials Science and EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Junmin Lee
- Department of Materials Science and EngineeringPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| | - Samad Ahadian
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| | - Vadim Jucaud
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| | - Hajar Maleki
- Institute of Inorganic ChemistryDepartment of ChemistryUniversity of CologneGreinstraße 650939CologneGermany
- Center for Molecular Medicine CologneCMMC Research CenterRobert‐Koch‐Str. 2150931CologneGermany
| | | | - Han‐Jun Kim
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
- College of PharmacyKorea UniversitySejong30019Republic of Korea
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation (TIBI)Los AngelesCA90024USA
| |
Collapse
|
8
|
Wei J, Zhao C, Hou Z, Li Y, Li H, Xiang D, Wu Y, Que Y. Preparation, Properties, and Mechanism of Flame-Retardant Poly(vinyl alcohol) Aerogels Based on the Multi-Directional Freezing Method. Int J Mol Sci 2022; 23:ijms232415919. [PMID: 36555563 PMCID: PMC9784135 DOI: 10.3390/ijms232415919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
In this work, exfoliated α-zirconium phosphate (α-ZrP) and phosphated cellulose (PCF) were employed to synthesize poly(vinyl alcohol) composite aerogels (PVA/PCF/α-ZrP) with excellent flame retardancy through the multi-directional freezing method. The peak heat release rate (PHRR), total smoke release (TSR), and CO production (COP) of the (PVA/PCF10/α-ZrP10-3) composite aerogel were considerably decreased by 42.3%, 41.4%, and 34.7%, as compared to the pure PVA aerogel, respectively. Simultaneously, the limiting oxygen index (LOI) value was improved from 18.1% to 28.4%. The mechanistic study of flame retardancy showed evidence that PCF and α-ZrP promoted the crosslinking and carbonization of PVA chains to form a barrier, which not only served as insulation between the material and the air, but also significantly reduced the emissions of combustible toxic gases (CO2, CO). In addition, the multi-directional freezing method further improved the catalytic carbonization process. This mutually advantageous strategy offers a new strategy for the preparation of composite aerogels with enhanced fire resistance.
Collapse
Affiliation(s)
- Jixuan Wei
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Chunxia Zhao
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
- Correspondence: (C.Z.); (Y.L.)
| | - Zhaorun Hou
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Yuntao Li
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
- State Key Laboratory Oil and Gas Reservoir Geology and Exploitation, Chengdu 610500, China
- Correspondence: (C.Z.); (Y.L.)
| | - Hui Li
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Dong Xiang
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Yuanpeng Wu
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Yusheng Que
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| |
Collapse
|
9
|
Zhang J, Yin B, Liu W, Liu X, Lian W, Tang S. Lightweight and hydrophobic silica-cellulose composite aerogel based on interpenetrating networks. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
10
|
Horvat G, Pantić M, Knez Ž, Novak Z. A Brief Evaluation of Pore Structure Determination for Bioaerogels. Gels 2022; 8:gels8070438. [PMID: 35877523 PMCID: PMC9316429 DOI: 10.3390/gels8070438] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/01/2022] [Accepted: 07/11/2022] [Indexed: 01/03/2023] Open
Abstract
This review discusses the most commonly employed methods for determining pore size and pore size distribution in bioaerogels. Aerogels are materials with high porosity and large surface areas. Most of their pores are in the range of mesopores, between 2 and 50 nm. They often have smaller or larger pores, which presents a significant challenge in determining the exact mean pore size and pore size distribution in such materials. The precision and actual value of the pore size are of considerable importance since pore size and pore size distribution are among the main properties of aerogels and are often directly connected with the final application of those materials. However, many recently published papers discuss or present pore size as one of the essential achievements despite the misinterpretation or the wrong assignments of pore size determination. This review will help future research and publications evaluate the pore size of aerogels more precisely and discuss it correctly. The study covers methods such as gas adsorption, from which BJH and DFT models are often used, SEM, mercury porosimetry, and thermoporometry. The methods are described, and the results obtained are discussed. The following paper shows that there is still no precise method for determining pore size distribution or mean pore size in aerogels until now. Knowing that, it is expected that this field will evolve in the future.
Collapse
Affiliation(s)
- Gabrijela Horvat
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
| | - Milica Pantić
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
| | - Željko Knez
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Zoran Novak
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (G.H.); (M.P.); (Ž.K.)
- Correspondence:
| |
Collapse
|
11
|
Zhang X, Liu K, Zhao J, Zhang Z, Luo Z, Guo Y, Zhang H, Wang Y, Bai R, Zhao D, Yang X, Liu Y, Yan X. Mechanically Interlocked Aerogels with Densely Rotaxanated Backbones. J Am Chem Soc 2022; 144:11434-11443. [PMID: 35696720 DOI: 10.1021/jacs.2c04717] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mechanically interlocked molecules are considered promising candidates for the construction of self-adaptive materials by virtue of their fascinating structural and dynamic features. However, it is still a great challenge to fabricate such materials with higher complexity and richer functionality. Herein, we propose the concept of mechanically interlocked aerogels (MIAs) in which the three-dimensional (3D) porous frameworks are made of dense mechanically interlocked modules, thereby enabling the integration of mechanical adaptivity and multifunctionality in a single entity. The lightweight MIA monoliths possess a good appearance and hierarchical meso- and submicron-pores. Profiting from the combination of dynamic mechanical bonds and porous skeletons of aerogels, our MIAs are not only mechanically robust (average Young's modulus = 5.80 GPa and specific modulus = 130.5 kN·m/kg) but also showcase favorable mechanical adaptivity and responsiveness under external stimuli. Taking advantage of the above integrative merits, we demonstrate the multifunctionality of our MIAs in terms of iodine uptake, thermal insulation, and selective adsorption of organic dyes. Our work opens the door to designing intelligent aerogels with delicate topological chemical structures while facilitating the development of mechanically interlocked materials.
Collapse
Affiliation(s)
- Xinhai Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Kai Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jun Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhaoming Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhen Luo
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yuchen Guo
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yongming Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Ruixue Bai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Dong Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xue Yang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yuhang Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xuzhou Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| |
Collapse
|
12
|
Fan Q, Ou R, Hao X, Deng Q, Liu Z, Sun L, Zhang C, Guo C, Bai X, Wang Q. Water-Induced Self-Assembly and In Situ Mineralization within Plant Phenolic Glycol-Gel toward Ultrastrong and Multifunctional Thermal Insulating Aerogels. ACS NANO 2022; 16:9062-9076. [PMID: 35653439 DOI: 10.1021/acsnano.2c00755] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Biopolymer/silica nanocomposite aerogels are highly attractive as thermally insulating materials for prevailing energy-saving engineering but are usually plagued by their lack of mechanical strength and environmental stability. Lignin is an appealing plant phenolic biopolymer due to its natural abundance, high stiffness, water repellency, and thermostability. However, integrating lignin and silica into high-performance 3D hybrid aerogels remains a substantial challenge due to the unstable co-sol process. In diatoms, the silicic acid stabilization prior to the condensation reaction is enhanced by the intervention of biomolecules in noncovalent interactions. Inspired by this mechanism, we herein rationally design an ultrastrong silica-mineralized lignin nanocomposite aerogel (LigSi) with an adjustable multilevel micro/nanostructure and arbitrary machinability through an unusual water-induced self-assembly and in situ mineralization based on ethylene glycol-stabilized lignin/siloxane colloid. The optimized LigSi exhibits an ultrahigh stiffness (a specific modulus of ∼376.3 kN m kg-1) and can support over 5000 times its own weight without obvious deformation. Moreover, the aerogel demonstrates a combination of outstanding properties, including superior and humidity-tolerant thermal insulation (maintained at ∼0.04 W m-1 K-1 under a relative humidity of 33-94%), excellent fire resistance withstanding an ∼1200 °C flame without disintegration, low near-infrared absorption (∼9%), and intrinsic self-cleaning/superhydrophobic performance (158° WCA). These advanced properties make it an ideal thermally insulating material for diversified applications in harsh environments. As a proof of concept, a dual-mode LigSi thermal device was designed to demonstrate the application prospect of combining passive heat-trapping and active heating in the building.
Collapse
Affiliation(s)
- Qi Fan
- Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Rongxian Ou
- Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Xiaolong Hao
- Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Qianyun Deng
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Zhenzhen Liu
- Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Lichao Sun
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Chaoqun Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Chuigen Guo
- Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| | - Xiaojing Bai
- School of Materials Science and Engineering, Anyang Institute of Technology, Anyang 455000, China
| | - Qingwen Wang
- Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, Guangzhou 510642, China
| |
Collapse
|
13
|
Zhao F, Liu H, Li H, Cao Y, Hua X, Ge S, He Y, Jiang C, He D. Cogel Strategy for the Preparation of a "Thorn"-Like Porous Halloysite/Gelatin Composite Aerogel with Excellent Mechanical Properties and Thermal Insulation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17763-17773. [PMID: 35384643 DOI: 10.1021/acsami.1c23647] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This work presents the preparation and property characterization of a biomass gelatin (GA)-based aerogel. Halloysite nanotubes (HNTs) were used to improve the mechanical strength, pore size distribution, and thermal stability of the aerogel. Polyethyleneimine (PEI) and (3-glycidyloxypropyl)trimethoxysilane (GPTMS) were utilized to increase the interfacial interaction between HNTs and GA through chemical cross-linking. Green, sustainable, and low-cost composite aerogels were prepared by "cogel" and freeze-drying techniques. The experimental results show that the HNTs/GA composite aerogel has a low density (31.98-57.48 mg/cm3), a high porosity (>95%), a low thermal conductivity (31.85-40.16 mW m-1 K-1), and superior moldability. In addition, the mechanical strength and thermal insulation properties of the HNTs/GA composite aerogels with a "thorn"-like lamellar porous network structure are different in the axial direction versus the radial direction. The maximum compressive strength, maximum compressive modulus, and corresponding specific modulus in the axial direction were 1.81 MPa, 5.45 MPa, and 94.8 kN m kg-1, respectively. Therefore, the biomass/clay composite aerogel will be a sustainable and renewable functional material with high mechanical strength and thermal insulation properties, which is expected to further promote biomass and clay for high value utilization.
Collapse
Affiliation(s)
- Fuxing Zhao
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Hao Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Hanxin Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Yixin Cao
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Xuyu Hua
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Shengzhuo Ge
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Yu He
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Chongwen Jiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
- Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, Hunan 410083, China
| | - Dewen He
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| |
Collapse
|
14
|
Otoni CG, Azeredo HMC, Mattos BD, Beaumont M, Correa DS, Rojas OJ. The Food-Materials Nexus: Next Generation Bioplastics and Advanced Materials from Agri-Food Residues. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2102520. [PMID: 34510571 DOI: 10.1002/adma.202102520] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/14/2021] [Indexed: 06/13/2023]
Abstract
The most recent strategies available for upcycling agri-food losses and waste (FLW) into functional bioplastics and advanced materials are reviewed and the valorization of food residuals are put in perspective, adding to the water-food-energy nexus. Low value or underutilized biomass, biocolloids, water-soluble biopolymers, polymerizable monomers, and nutrients are introduced as feasible building blocks for biotechnological conversion into bioplastics. The latter are demonstrated for their incorporation in multifunctional packaging, biomedical devices, sensors, actuators, and energy conversion and storage devices, contributing to the valorization efforts within the future circular bioeconomy. Strategies are introduced to effectively synthesize, deconstruct and reassemble or engineer FLW-derived monomeric, polymeric, and colloidal building blocks. Multifunctional bioplastics are introduced considering the structural, chemical, physical as well as the accessibility of FLW precursors. Processing techniques are analyzed within the fields of polymer chemistry and physics. The prospects of FLW streams and biomass surplus, considering their availability, interactions with water and thermal stability, are critically discussed in a near-future scenario that is expected to lead to next-generation bioplastics and advanced materials.
Collapse
Affiliation(s)
- Caio G Otoni
- Department of Materials Engineering (DEMa), Federal University of São Carlos (UFSCar), Rod. Washington Luiz, km 235, São Carlos, SP, 13565-905, Brazil
| | - Henriette M C Azeredo
- Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita 2270, Fortaleza, CE, 60511-110, Brazil
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP, 13560-970, Brazil
| | - Bruno D Mattos
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Marco Beaumont
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 24, Tulln, A-3430, Austria
| | - Daniel S Correa
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP, 13560-970, Brazil
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
- Bioproducts Institute, Departments of Chemical & Biological Engineering, Chemistry and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| |
Collapse
|
15
|
Polysaccharide-based aerogels for thermal insulation and superinsulation: An overview. Carbohydr Polym 2021; 266:118130. [PMID: 34044946 DOI: 10.1016/j.carbpol.2021.118130] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/13/2021] [Accepted: 04/24/2021] [Indexed: 02/02/2023]
Abstract
To reduce energy losses due to the insufficient thermal insulation is one of the current "hot" topics. Various commercial porous materials are used with the best conductivity around 0.03-0.04 W/(m·K). Aerogels are the only known materials with "intrinsic" thermal superinsulating properties, i.e. with thermal conductivity below that of air in ambient conditions (0.025 W/(m·K)). The classical thermal superinsulating aerogels are based on silica and some synthetic polymers, with conductivity 0.014-0.018 W/(m·K). Aerogels based on natural polymers are new materials created at the beginning of the 21st century. Can bio-aerogels possess thermal superinsulating properties? What are the bottlenecks in the development of bio-aerogels as new high-performance thermal insulationing materials? We try to answer these questions by analyzing thermal conductivity of bio-aerogels reported in literature.
Collapse
|
16
|
Ahankari S, Paliwal P, Subhedar A, Kargarzadeh H. Recent Developments in Nanocellulose-Based Aerogels in Thermal Applications: A Review. ACS NANO 2021; 15:3849-3874. [PMID: 33710860 DOI: 10.1021/acsnano.0c09678] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Naturally derived nanocellulose (NC) is a renewable, biodegradable nanomaterial with high strength, low density, high surface area, and tunable surface chemistry, which allows its interaction with other polymers and nanomaterials in a controlled manner. In recent years, NC aerogel has gathered a lot of attention due to environmental concerns. This review presents recent developments of NC-based aerogels and their controlled interactions with other polymers and nanomaterials for thermal applications that include electronic devices, the apparel industry, superinsulating materials, and flame-retardant smart building materials. After going through the distinctive properties of NC aerogels, they are orderly categorized and discussed as thermally insulated, thermally conductive, and flame-retardant materials.
Collapse
Affiliation(s)
- Sandeep Ahankari
- School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Pradyumn Paliwal
- School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Aditya Subhedar
- School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Hanieh Kargarzadeh
- Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Seinkiewicza 112, 90-363 Lodz, Poland
| |
Collapse
|
17
|
Maleki H, Fischer T, Bohr C, Auer J, Mathur S, Milow B. Hierarchically Organized Biomimetic Architectured Silk Fibroin-Ceramic-Based Anisotropic Hybrid Aerogels for Thermal Energy Management. Biomacromolecules 2021; 22:1739-1751. [PMID: 33689303 DOI: 10.1021/acs.biomac.1c00175] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Due to the current energy crises, the search for thermal energy management systems based on thermal insulating porous materials has drawn a significant deal of attention. Herein, we demonstrated the thermal insulation and management capabilities of cuttlefish bone mimetic aerogels with hierarchically organized porous structures directly fabricated from surface-modified and self-assembled silk fibroin (SF) biopolymer extracted from Bombyx mori silkworm cocoon biomass; hereafter, the materials developed referred to as X-AeroSF. Exploiting from creating an interpenetrating network of the secondary ceramic components of various one-, two-, and three-dimensional sepiolite (Mg2H2Si3O9·xH2O), MXene (Ti3C2TX), and silica nanostructures inside the self-assembled SF biopolymer and subsequent uni-directional freeze-casting and drying the resulted hydrogels, composites with aerogel features were obtained. The obtained aerogels possess low bulk density (ρb = 0.059-0.090 g cm-3), low thermal conductivities (λ = 0.035-0.042 W m-1 K-1), and high thermal stability (up to ∼260 °C) with multi-modal lamella-bridge porous microstructures found in the cuttlefish bone structure. In addition, the intriguing anisotropy in the X-AeroSF composite porous structure enables thermal dissipation along with the aligned pore directions, thus decreasing the local overheating on the heated side. As a result, an improvement in thermal insulation in the perpendicular direction with respect to the pore lamellae was obtained. Therefore, the exquisite thermal energy management, biodegradability, low bulk density, fire resistivity, together with possible manufacture scalability of X-AeroSF composite, make this material attractive for future practical applications.
Collapse
Affiliation(s)
- Hajar Maleki
- Institute of Inorganic Chemistry, Department of Chemistry, University of Cologne, Greinstraße 6, Cologne 50939, Germany
| | - Thomas Fischer
- Institute of Inorganic Chemistry, Department of Chemistry, University of Cologne, Greinstraße 6, Cologne 50939, Germany
| | - Christoph Bohr
- Institute of Inorganic Chemistry, Department of Chemistry, University of Cologne, Greinstraße 6, Cologne 50939, Germany
| | - Jaqueline Auer
- University of Applied Sciences Upper Austria, Stelzhamerstraße 23, Wels 4600, Austria
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, Department of Chemistry, University of Cologne, Greinstraße 6, Cologne 50939, Germany
| | - Barbara Milow
- Institute of Inorganic Chemistry, Department of Chemistry, University of Cologne, Greinstraße 6, Cologne 50939, Germany.,Department of Aerogels and Aerogel Composites, Institute of Materials Research, German Aerospace Center (DLR), Linder Höhe, Cologne 51147, Germany
| |
Collapse
|
18
|
Maleki H, Huesing N. Silica-silk fibroin hybrid (bio)aerogels: two-step versus one-step hybridization. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 2021; 98:430-438. [PMID: 34720431 PMCID: PMC8550194 DOI: 10.1007/s10971-019-04933-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/04/2019] [Indexed: 05/16/2023]
Abstract
In this study, silk fibroin as a highly promising naturally occurring biopolymer extracted from silkworm cocoon is applied to mechanically reinforce silica aerogels. To this aim, two different approaches for the incorporation of silk fibroin into the silica network are compared: (1) a one-step acid catalyzed and (2) a two-step acid-base catalyzed sol-gel reaction. The total organosilane concentration, as well as the SF to silane mass fractions, regulated the hybridization process to proceed either through a one-step or two-step sol-gel reaction. In both processes, for an efficient chemical mixing the silk fibroin components with the silane phase, a silane coupling agent, 5-(trimethoxysilyl) pentanoic acid (TMSPA), comprising carboxylic acid groups and a pentyl hydrocarbon chain has been used. For a low organosilane content (3.4 mmol) along with a high SF to silane mass ratio (15-30%), the gelation of the silane and silk fibroin phases took place in a one-pot/one-step process in the presence of an acid catalyst in an entirely aqueous system. In the two-step synthesis approach, which was applied for high initial silane contents (17 mmol), and low SF to silane mass ratios (1-4%), first, the gelation of the silk fibroin phase was triggered by addition of an acid catalyst followed by a more pronounced condensation of the silane catalyzed by the addition of the base. Both synthesis approaches led to materials with promising mechanical properties-being 1) the one-step process resulting in gels with much better compressibility (up to 70% of strain), low density (0.17-0.22 g cm-3) and three orders of magnitude improvement in the Young's modulus (13.5 MPa) compared to that of the pristine silica aerogel but with rather high shrinkage (30-40%). The two-step process in principle could result in the hybrid aerogel with interesting bulk density (0.17-0.28 g cm-3) with lower shrinkage (10%), but the resultant aerogel was stiff and fragile. Also, both approaches led to a significant reduction in the time required to prepare strong hybrid aerogels compared to conventional hybrid polymer-silica aerogels with the utilization of an entirely aqueous synthesis approach for a wide range of applications.
Collapse
Affiliation(s)
- Hajar Maleki
- Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
- Institute of Inorganic Chemistry, Department of Chemistry, University of Cologne, Greinstraße, 6 50939 Cologne, Germany
| | - Nicola Huesing
- Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
| |
Collapse
|
19
|
Budtova T, Aguilera DA, Beluns S, Berglund L, Chartier C, Espinosa E, Gaidukovs S, Klimek-Kopyra A, Kmita A, Lachowicz D, Liebner F, Platnieks O, Rodríguez A, Tinoco Navarro LK, Zou F, Buwalda SJ. Biorefinery Approach for Aerogels. Polymers (Basel) 2020; 12:E2779. [PMID: 33255498 PMCID: PMC7760295 DOI: 10.3390/polym12122779] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/20/2020] [Accepted: 11/21/2020] [Indexed: 12/30/2022] Open
Abstract
According to the International Energy Agency, biorefinery is "the sustainable processing of biomass into a spectrum of marketable bio-based products (chemicals, materials) and bioenergy (fuels, power, heat)". In this review, we survey how the biorefinery approach can be applied to highly porous and nanostructured materials, namely aerogels. Historically, aerogels were first developed using inorganic matter. Subsequently, synthetic polymers were also employed. At the beginning of the 21st century, new aerogels were created based on biomass. Which sources of biomass can be used to make aerogels and how? This review answers these questions, paying special attention to bio-aerogels' environmental and biomedical applications. The article is a result of fruitful exchanges in the frame of the European project COST Action "CA 18125 AERoGELS: Advanced Engineering and Research of aeroGels for Environment and Life Sciences".
Collapse
Affiliation(s)
- Tatiana Budtova
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Daniel Antonio Aguilera
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Sergejs Beluns
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia; (S.B.); (S.G.); (O.P.)
| | - Linn Berglund
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, Sweden;
| | - Coraline Chartier
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Eduardo Espinosa
- Bioagres Group, Chemical Engineering Department, Faculty of Science, Universidad de Córdoba, Campus of Rabanales, 14014 Córdoba, Spain; (E.E.); (A.R.)
| | - Sergejs Gaidukovs
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia; (S.B.); (S.G.); (O.P.)
| | - Agnieszka Klimek-Kopyra
- Department of Agroecology and Plant Production, Faculty of Agriculture and Economics, University of Agriculture, Aleja Mickieiwcza 21, 31-120 Kraków, Poland;
| | - Angelika Kmita
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (A.K.); (D.L.)
| | - Dorota Lachowicz
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (A.K.); (D.L.)
| | - Falk Liebner
- Department of Chemistry, Institute for Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenz Straße 24, A-3430 Tulln an der Donau, Austria;
| | - Oskars Platnieks
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia; (S.B.); (S.G.); (O.P.)
| | - Alejandro Rodríguez
- Bioagres Group, Chemical Engineering Department, Faculty of Science, Universidad de Córdoba, Campus of Rabanales, 14014 Córdoba, Spain; (E.E.); (A.R.)
| | - Lizeth Katherine Tinoco Navarro
- CEITEC-VUT Central European Institute of Technology—Brno university of Technology, Purkyňova 123, 612 00 Brno-Královo Pole, Czech Republic;
| | - Fangxin Zou
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| | - Sytze J. Buwalda
- MINES ParisTech, Center for Materials Forming (CEMEF), PSL Research University, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France; (D.A.A.); (C.C.); (F.Z.)
| |
Collapse
|
20
|
Guerrero-Alburquerque N, Zhao S, Adilien N, Koebel MM, Lattuada M, Malfait WJ. Strong, Machinable, and Insulating Chitosan-Urea Aerogels: Toward Ambient Pressure Drying of Biopolymer Aerogel Monoliths. ACS APPLIED MATERIALS & INTERFACES 2020; 12:22037-22049. [PMID: 32302092 DOI: 10.1021/acsami.0c03047] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Biopolymer aerogels are an emerging class of materials with potential applications in drug delivery, thermal insulation, separation, and filtration. Chitosan is of particular interest as a sustainable, biocompatible, and abundant raw material. Here, we present urea-modified chitosan aerogels with a high surface area and excellent thermal and mechanical properties. The irreversible gelation of an acidic chitosan solution is triggered by the thermal decomposition of urea at 80 °C through an increase in pH and, more importantly, the formation of abundant ureido terminal groups. The hydrogels are dried using either supercritical CO2 drying (SCD) or ambient pressure drying (APD) methods to elucidate the influence of the drying process on the final aerogel properties. The hydrogels are exchanged into ethanol prior to SCD, and into ethanol and then heptane prior to APD. The surface chemistry and microstructure are monitored by solid-state NMR and Fourier transform infrared spectroscopy, scanning electron microscopy, and nitrogen sorption. Surprisingly, large monolithic aerogel plates (70 × 70 mm2) can be produced by APD, albeit at a somewhat higher density (0.17-0.42 g/cm3). The as prepared aerogels have thermal conductivities of ∼24 and ∼31 mW/(m·K) and surface areas of 160-170 and 85-230 m2/g, for SCD and APD, respectively. For a primarily biopolymer-based material, these aerogels are exceptionally stable at elevated temperature (TGA) and char and self-extinguish after direct flame exposure. The urea-modified chitosan aerogels display superior mechanical properties compared to traditional silica aerogels, with no brittle rupture up to at least 80% strain, and depending on the chitosan concentration, relatively high E-moduli (1.0-11.6 MPa), and stress at 80% strain values (σ80 of 3.5-17.9 MPa). Remarkably, the aerogel monoliths can be shaped and machined with standard tools, for example, drilling and sawing. This first demonstration to produce monolithic and machinable, mesoporous aerogels from bio-sourced, renewable, and nontoxic precursors, combined with the potential for reduced production cost by means of simple APD, opens up new opportunities for biopolymer aerogel applications and marks an important step toward commercialization of biopolymer aerogels.
Collapse
Affiliation(s)
- Natalia Guerrero-Alburquerque
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Shanyu Zhao
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Nour Adilien
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Matthias M Koebel
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Marco Lattuada
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Wim J Malfait
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| |
Collapse
|
21
|
Follmann HD, Oliveira ON, Martins AC, Lazarin-Bidóia D, Nakamura CV, Rubira AF, Silva R, Asefa T. Nanofibrous silica microparticles/polymer hybrid aerogels for sustained delivery of poorly water-soluble camptothecin. J Colloid Interface Sci 2020; 567:92-102. [DOI: 10.1016/j.jcis.2020.01.110] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 02/06/2023]
|
22
|
Rezaei S, Zolali AM, Jalali A, Park CB. Novel and simple design of nanostructured, super-insulative and flexible hybrid silica aerogel with a new macromolecular polyether-based precursor. J Colloid Interface Sci 2020; 561:890-901. [DOI: 10.1016/j.jcis.2019.11.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/14/2019] [Accepted: 11/16/2019] [Indexed: 01/19/2023]
|
23
|
Wang H, Bai C, Zhang T, Wei J, Li Y, Ning F, Shen Y, Wang J, Zhang X, Yang H, Li Q, Zhou X. Flexible and Adaptable Fuel Cell Pack with High Energy Density Realized by a Bifunctional Catalyst. ACS APPLIED MATERIALS & INTERFACES 2020; 12:4473-4481. [PMID: 31895534 DOI: 10.1021/acsami.9b18511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A proton exchange membrane fuel cell (PEMFC) system with a hydrogen generator could have higher energy density than flexible batteries and supercapacitors and is possible to meet the urgent demand of flexible electronics. However, a flexible PEMFC pack is still not available due to the absence of a flexible hydrogen generator. To solve this problem, we successfully invented a flexible and adaptable hydrogen generator, which was realized by a new bifunctional aerogel catalyst with the abilities of both storing and producing hydrogen. The flexible hydrogen generator can produce hydrogen at room temperature when the device is inverting, bending, and rotating. By combining this flexible hydrogen generator and the unique flexible PEMFC stack of our group, we originally made a highly flexible and adaptable fuel cell pack with a high theoretical energy density (up to 722 Wh·kg-1) and current achieved energy density (135.9 Wh·kg-1). Such a PEMFC pack is highly promising to meet the high demand of flexible electronics.
Collapse
Affiliation(s)
- Huihui Wang
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Chuang Bai
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Ting Zhang
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Jun Wei
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Yali Li
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Fandi Ning
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Yangbin Shen
- Institute of Materials Science and Devices , Suzhou University of Science and Technology , Suzhou 215009 , China
| | - Jin Wang
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Xuetong Zhang
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Hui Yang
- Center for Energy Storage and Conversion , Shanghai Advanced Research Institute, Chinese Academy of Sciences (CAS) , Shanghai 201210 , China
| | - Qingwen Li
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| | - Xiaochun Zhou
- School of Nano-Tech and Nano-Bionics , University of Science and Technology of China , Hefei 230026 , China
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS) , Suzhou 215123 , China
| |
Collapse
|
24
|
Zhou S, Apostolopoulou-Kalkavoura V, Tavares da Costa MV, Bergström L, Strømme M, Xu C. Elastic Aerogels of Cellulose Nanofibers@Metal-Organic Frameworks for Thermal Insulation and Fire Retardancy. NANO-MICRO LETTERS 2019; 12:9. [PMID: 34138073 PMCID: PMC7770683 DOI: 10.1007/s40820-019-0343-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/20/2019] [Indexed: 05/21/2023]
Abstract
Metal-organic frameworks (MOFs) with high microporosity and relatively high thermal stability are potential thermal insulation and flame-retardant materials. However, the difficulties in processing and shaping MOFs have largely hampered their applications in these areas. This study outlines the fabrication of hybrid CNF@MOF aerogels by a stepwise assembly approach involving the coating and cross-linking of cellulose nanofibers (CNFs) with continuous nanolayers of MOFs. The cross-linking gives the aerogels high mechanical strength but superelasticity (80% maximum recoverable strain, high specific compression modulus of ~ 200 MPa cm3 g-1, and specific stress of ~ 100 MPa cm3 g-1). The resultant lightweight aerogels have a cellular network structure and hierarchical porosity, which render the aerogels with relatively low thermal conductivity of ~ 40 mW m-1 K-1. The hydrophobic, thermally stable MOF nanolayers wrapped around the CNFs result in good moisture resistance and fire retardancy. This study demonstrates that MOFs can be used as efficient thermal insulation and flame-retardant materials. It presents a pathway for the design of thermally insulating, superelastic fire-retardant nanocomposites based on MOFs and nanocellulose.
Collapse
Affiliation(s)
- Shengyang Zhou
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, 751 21, Uppsala, Sweden
| | | | | | - Lennart Bergström
- Department of Materials and Environmental Chemistry, Stockholm University, 106 91, Stockholm, Sweden
| | - Maria Strømme
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, 751 21, Uppsala, Sweden.
| | - Chao Xu
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Ångström Laboratory, Uppsala University, 751 21, Uppsala, Sweden.
| |
Collapse
|
25
|
Li H, Pan J, Gao C, Ma M, Lu L, Xiong Y, Dong F. Mercapto-Functionalized Porous Organosilica Monoliths Loaded with Gold Nanoparticles for Catalytic Application. Molecules 2019; 24:molecules24234366. [PMID: 31795338 PMCID: PMC6930568 DOI: 10.3390/molecules24234366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 11/25/2022] Open
Abstract
Porous organosilica monoliths have attracted much attention from both the academic and industrial fields due to their porous structure; excellent mechanical property and easily functionalized surface. A new mercapto-functionalized silicone monolith from a precursor mixture containing methyltrimethoxysilane; 3-mercaptopropyltrimethoxysilane; and 3-mercaptopropyl(dimethoxy)methylsilane prepared via a two-step acid/base hydrolysis–polycondensation process was reported. Silane precursor ratios and surfactant type were varied to control the networks of porous monolithic gels. Gold nanoparticles were loaded onto the surface of the porous organosilica monolith (POM). Versatile characterization techniques were utilized to investigate the properties of the synthesized materials with and without gold nanoparticles. Scanning electron microscopy was used to investigate the morphology of the as-synthesized porous monolith materials. Fourier transform infrared spectroscopy was applied to confirm the surface chemistry. 29Si nuclear magnetic resonance was used to investigate the hydrolysis and polycondensation of organosilane precursors. Transmission electron microscopy was carried out to prove the existence of well-dispersed gold nanoparticles on the porous materials. Ultraviolet–visible spectroscopy was utilized to evaluate the high catalytic performance of the as-synthesized Au/POM particles
Collapse
Affiliation(s)
- Hongwei Li
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Junhui Pan
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Chengtao Gao
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550025, China
| | - Mengyu Ma
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Liangyu Lu
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Yuzhu Xiong
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Fuping Dong
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
- Correspondence: ; Tel.: +86-155-1903-7121
| |
Collapse
|
26
|
Preparation and characterization of polysaccharide - silica hybrid aerogels. Sci Rep 2019; 9:16492. [PMID: 31712716 PMCID: PMC6848218 DOI: 10.1038/s41598-019-52974-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/24/2019] [Indexed: 11/08/2022] Open
Abstract
Hybrid aerogels based on polysaccharides - silica were prepared and characterized. Tetramethylorthosilicate (TMOS) was used as inorganic precursor and various polysaccharides (alginate, pectin, xanthan and guar) were used as organic precursors. TMOS was added to polysaccharide aqueous solutions, resulting in stable wet gels. There were no additional chemicals or cross-linkers in the process. Produced wet gels were dried under supercritical conditions with CO2 in order to preserve their structure. The nitrogen adsorption results were compared to pure polysaccharide aerogels, prepared in our previous research. It is shown, that the addition of silica to pectin, xanthan, alginate and guar significantly improved their structural properties, primarily seen in the drastic increase of the surface area. Guar-silica aerogels reached the highest surface area of 679 m2 g−1. The thermal properties, including thermal degradation and thermal conductivity were highly improved. Among the prepared hybrid aerogels, pectin-silica samples had the lowest thermal conductivity of 19 mWm−1 K−1.
Collapse
|
27
|
Liu R, Wang J, Du Y, Liao J, Zhang X. Phase-separation induced synthesis of superhydrophobic silica aerogel powders and granules. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.120971] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
28
|
Khedaioui D, Boisson C, D'Agosto F, Montarnal D. Polyethylene Aerogels with Combined Physical and Chemical Crosslinking: Improved Mechanical Resilience and Shape-Memory Properties. Angew Chem Int Ed Engl 2019; 58:15883-15889. [PMID: 31498536 DOI: 10.1002/anie.201908257] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/30/2019] [Indexed: 11/11/2022]
Abstract
While the introduction of polymers into aerogels strongly enhances their toughness, truly elastic monolithic aerogels which restore their dimensions upon extensive compression are still challenging to synthesize. In this context hydrophobic semi-crystalline polymers with low glass transition temperatures, and combined stiffness and flexibility, have only recently attracted attention. Shown here is that polyethylene aerogels with a low density, and combined chemical crosslinking and high crystallinity, display high moduli and excellent mechanical resilience. To maximize the crystallinity of these aerogels while maintaining a high crosslinking density, polyethylene networks with well-defined segments were synthesized by hydrosilylation crosslinking of telechelic, vinyl-functionalized oligomers obtained from catalyzed chain-growth polymerization. Recoverable deformations both above and below the melting temperature of polyethylene affords remarkable shape-memory properties.
Collapse
Affiliation(s)
- Douriya Khedaioui
- Univ Lyon. Université Claude Bernard Lyon 1, CPE Lyon, CNRS, UMR 5265, Chemistry, Catalysis, Polymers and Processes, 43 Bvd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Christophe Boisson
- Univ Lyon. Université Claude Bernard Lyon 1, CPE Lyon, CNRS, UMR 5265, Chemistry, Catalysis, Polymers and Processes, 43 Bvd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Franck D'Agosto
- Univ Lyon. Université Claude Bernard Lyon 1, CPE Lyon, CNRS, UMR 5265, Chemistry, Catalysis, Polymers and Processes, 43 Bvd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Damien Montarnal
- Univ Lyon. Université Claude Bernard Lyon 1, CPE Lyon, CNRS, UMR 5265, Chemistry, Catalysis, Polymers and Processes, 43 Bvd du 11 Novembre 1918, 69616, Villeurbanne, France
| |
Collapse
|
29
|
Khedaioui D, Boisson C, D'Agosto F, Montarnal D. Polyethylene Aerogels with Combined Physical and Chemical Crosslinking: Improved Mechanical Resilience and Shape‐Memory Properties. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Douriya Khedaioui
- Univ Lyon. Université Claude Bernard Lyon 1 CPE Lyon CNRS, UMR 5265 Chemistry, Catalysis, Polymers and Processes 43 Bvd du 11 Novembre 1918 69616 Villeurbanne France
| | - Christophe Boisson
- Univ Lyon. Université Claude Bernard Lyon 1 CPE Lyon CNRS, UMR 5265 Chemistry, Catalysis, Polymers and Processes 43 Bvd du 11 Novembre 1918 69616 Villeurbanne France
| | - Franck D'Agosto
- Univ Lyon. Université Claude Bernard Lyon 1 CPE Lyon CNRS, UMR 5265 Chemistry, Catalysis, Polymers and Processes 43 Bvd du 11 Novembre 1918 69616 Villeurbanne France
| | - Damien Montarnal
- Univ Lyon. Université Claude Bernard Lyon 1 CPE Lyon CNRS, UMR 5265 Chemistry, Catalysis, Polymers and Processes 43 Bvd du 11 Novembre 1918 69616 Villeurbanne France
| |
Collapse
|
30
|
Wu T, Dong J, Xu G, Gan F, Zhao X, Zhang Q. Attapulgite-reinforced polyimide hybrid aerogels with high dimensional stability and excellent thermal insulation property. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
31
|
Stamm A, Biundo A, Schmidt B, Brücher J, Lundmark S, Olsén P, Fogelström L, Malmström E, Bornscheuer UT, Syrén PO. A Retro-biosynthesis-Based Route to Generate Pinene-Derived Polyesters. Chembiochem 2019; 20:1664-1671. [PMID: 30793830 PMCID: PMC6618282 DOI: 10.1002/cbic.201900046] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Indexed: 12/21/2022]
Abstract
Significantly increased production of biobased polymers is a prerequisite to replace petroleum‐based materials towards reaching a circular bioeconomy. However, many renewable building blocks from wood and other plant material are not directly amenable for polymerization, due to their inert backbones and/or lack of functional group compatibility with the desired polymerization type. Based on a retro‐biosynthetic analysis of polyesters, a chemoenzymatic route from (−)‐α‐pinene towards a verbanone‐based lactone, which is further used in ring‐opening polymerization, is presented. Generated pinene‐derived polyesters showed elevated degradation and glass transition temperatures, compared with poly(ϵ‐decalactone), which lacks a ring structure in its backbone. Semirational enzyme engineering of the cyclohexanone monooxygenase from Acinetobacter calcoaceticus enabled the biosynthesis of the key lactone intermediate for the targeted polyester. As a proof of principle, one enzyme variant identified from screening in a microtiter plate was used in biocatalytic upscaling, which afforded the bicyclic lactone in 39 % conversion in shake flask scale reactions.
Collapse
Affiliation(s)
- Arne Stamm
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden.,KTH Royal Institute of Technology, Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Antonino Biundo
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden.,KTH Royal Institute of Technology, Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Björn Schmidt
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden.,KTH Royal Institute of Technology, Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Jörg Brücher
- Holmen AB, Development, 89180, Östersund, Sweden
| | - Stefan Lundmark
- Perstorp AB, Innovation, Perstorp Industrial Park, 284 80, Perstorp, Sweden
| | - Peter Olsén
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden
| | - Linda Fogelström
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden.,Wallenberg Wood Science Center, Teknikringen 56-58, 100 44, Stockholm, Sweden
| | - Eva Malmström
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden.,Wallenberg Wood Science Center, Teknikringen 56-58, 100 44, Stockholm, Sweden
| | - Uwe T Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Universität Greifswald, Felix-Hausdorff-Strasse 4, 17487, Greifswald, Germany
| | - Per-Olof Syrén
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, Teknikringen 56-58, 100 44, Stockholm, Sweden.,KTH Royal Institute of Technology, Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden.,KTH Royal Institute of Technology, Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, Division of Protein Technology, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden.,Wallenberg Wood Science Center, Teknikringen 56-58, 100 44, Stockholm, Sweden
| |
Collapse
|
32
|
Maleki H, Shahbazi MA, Montes S, Hosseini SH, Eskandari MR, Zaunschirm S, Verwanger T, Mathur S, Milow B, Krammer B, Hüsing N. Mechanically Strong Silica-Silk Fibroin Bioaerogel: A Hybrid Scaffold with Ordered Honeycomb Micromorphology and Multiscale Porosity for Bone Regeneration. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17256-17269. [PMID: 31013056 DOI: 10.1021/acsami.9b04283] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Due to the synergic feature of individual components in hybrid (nano)biomaterials, their application in regenerative medicine has drawn significant attention. Aiming to address all the current challenges of aerogel as a potent scaffold in bone tissue engineering application, we adopted a novel synthesis approach to synergistically improve the pore size regime and mechanical strength in the aerogel. The three-dimensional aerogel scaffold in this study has been synthesized through a versatile one-pot aqueous-based sol-gel hybridization/assembly of organosilane (tetraethyl orthosilicate) and silk fibroin (SF) biopolymer, followed by unidirectional freeze-casting of the as-prepared hybrid gel and supercritical drying. The developed ultralight silica-SF aerogel hybrids demonstrated a hierarchically organized porous structure with interesting honeycomb-shaped micromorphology and microstructural alignment (anisotropy) in varied length scales. The average macropore size of the hybrid aerogel lied in ∼0.5-18 μm and was systematically controlled with freeze-casting conditions. Together with high porosity (91-94%), high Young's modulus (∼4-7 MPa, >3 order of magnitude improvement compared to their pristine aerogel counterparts), and bone-type anisotropy in the mechanical compressive behavior, the silica-SF hybrid aerogel of this study acted as a very competent scaffold for bone tissue formation. The results of in vitro assessments revealed that the silica-SF aerogel is not only cytocompatible and nonhemolytic but also acted as an open porous microenvironment to trigger osteoblast cell attachment, growth, and proliferation on its surface within 14 days of incubation. Moreover, to support the in vitro results, in vivo bone formation within the aerogel implant in the bone defect site was studied. The X-ray radiology and microcomputed tomography analyses confirmed that a significant new bone tissue density formed in the defect site within 25 days of implantation. Also, in vivo toxicology studies showed a zero-toxic impact of the aerogel implant on the blood biochemical and hematological parameters. Finally, the study clearly shows the potential of aerogel as a bioactive and osteoconductive open porous cellular matrix for a successful osseointegration process.
Collapse
Affiliation(s)
- Hajar Maleki
- Institute of Inorganic Chemistry, Department of Chemistry , University of Cologne , Greinstraße 6 , 50939 Cologne , Germany
| | - Mohammad-Ali Shahbazi
- Department of Micro- and Nanotechnology , Technical University of Denmark , DK-2800 Kgs Lyngby , Denmark
| | - Susan Montes
- Department of Chemistry and Physics of Materials , Paris-Lodron University of Salzburg , Jakob-Haringerstr. 2A , 5020 Salzburg , Austria
| | - Seyed Hojjat Hosseini
- Department of Pharmacology, School of Medicine , Zanjan University of Medical Sciences , 45139-56111 Zanjan , Iran
| | | | - Stefan Zaunschirm
- University of Applied Sciences Upper Austria , Franz-Fritsch-Straße 11 , 4600 Wels , Austria
| | - Thomas Verwanger
- Department of Biosciences , Paris-Lodron University of Salzburg , Hellbrunnerstr. 34 , 5020 Salzburg , Austria
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, Department of Chemistry , University of Cologne , Greinstraße 6 , 50939 Cologne , Germany
| | - Barbara Milow
- Institute of Inorganic Chemistry, Department of Chemistry , University of Cologne , Greinstraße 6 , 50939 Cologne , Germany
- Department of Aerogels and Aerogel Composites , Institute of Materials Research, German Aerospace Center (DLR) , Linder Höhe , 51147 Cologne , Germany
| | - Barbara Krammer
- University of Applied Sciences Upper Austria , Franz-Fritsch-Straße 11 , 4600 Wels , Austria
| | - Nicola Hüsing
- Department of Chemistry and Physics of Materials , Paris-Lodron University of Salzburg , Jakob-Haringerstr. 2A , 5020 Salzburg , Austria
| |
Collapse
|
33
|
García-González CA, Budtova T, Durães L, Erkey C, Del Gaudio P, Gurikov P, Koebel M, Liebner F, Neagu M, Smirnova I. An Opinion Paper on Aerogels for Biomedical and Environmental Applications. Molecules 2019; 24:molecules24091815. [PMID: 31083427 PMCID: PMC6539078 DOI: 10.3390/molecules24091815] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/02/2019] [Accepted: 05/08/2019] [Indexed: 01/08/2023] Open
Abstract
Aerogels are a special class of nanostructured materials with very high porosity and tunable physicochemical properties. Although a few types of aerogels have already reached the market in construction materials, textiles and aerospace engineering, the full potential of aerogels is still to be assessed for other technology sectors. Based on current efforts to address the material supply chain by a circular economy approach and longevity as well as quality of life with biotechnological methods, environmental and life science applications are two emerging market opportunities where the use of aerogels needs to be further explored and evaluated in a multidisciplinary approach. In this opinion paper, the relevance of the topic is put into context and the corresponding current research efforts on aerogel technology are outlined. Furthermore, key challenges to be solved in order to create materials by design, reproducible process technology and society-centered solutions specifically for the two abovementioned technology sectors are analyzed. Overall, advances in aerogel technology can yield innovative and integrated solutions for environmental and life sciences which in turn can help improve both the welfare of population and to move towards cleaner and smarter supply chain solutions.
Collapse
Affiliation(s)
- Carlos A García-González
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, R+D Pharma group (GI-1645), Faculty of Pharmacy and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Tatiana Budtova
- MINES ParisTech, PSL Research University, CEMEF ⁻ Center for materials forming, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France.
| | - Luisa Durães
- CIEPQPF, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, 3030-790 Coimbra, Portugal.
| | - Can Erkey
- Department of Chemical and Biological Engineering, Koç University, 34450 Sariyer, Istanbul, Turkey.
| | - Pasquale Del Gaudio
- Department of Pharmacy, University of Salerno, I-84084 Fisciano (SA), Italy.
| | - Pavel Gurikov
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Matthias Koebel
- Laboratory for Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology - Empa, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland.
| | - Falk Liebner
- Institute for Chemistry of Renewable Resources, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria.
| | - Monica Neagu
- Immunology Department, "Victor Babes" National Institute of Pathology, 99-101 Splaiul Independentei, 050096, Bucharest, Romania.
| | - Irina Smirnova
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| |
Collapse
|
34
|
Karamikamkar S, Abidli A, Behzadfar E, Rezaei S, Naguib HE, Park CB. The effect of graphene-nanoplatelets on gelation and structural integrity of a polyvinyltrimethoxysilane-based aerogel. RSC Adv 2019; 9:11503-11520. [PMID: 35520268 PMCID: PMC9063430 DOI: 10.1039/c9ra00994a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/20/2019] [Indexed: 11/21/2022] Open
Abstract
Aerogels suffer greatly from poor mechanical properties resulting from their particulate structure. They also experience noticeable pore shrinkage during drying due to their low structural integrity. These shortfalls limit their broad application. To enhance the mechanical properties and improve the structural integrity of silica-based aerogels, graphene nanoplatelets (GnPs), as a nanofiller, were embedded into the solution of polymerized vinyltrimethoxysilane (VTMS) to prepare P-VTMS-based silica/GnP (PE-b-Si/GnP) hybrid aerogel monoliths based on sol–gel synthesis and supercritical drying. The inclusion of GnPs in our polymer-based silica aerogel processes reinforced the nanostructure and suppressed PE-b-Si nanopore shrinkage during supercritical drying, thus acting as an effective anti-shrinkage nanofiller. Accordingly, the GnPs significantly contributed to the PE-b-Si solution's uniform gelation and to the change of the hydrophilic nature to a hydrophobic one even with 1 wt% addition. In this study, the influence of the GnP content on the sol–gel process, structure, and physical properties of PE-based silica aerogels is studied. Aerogels suffer greatly from poor mechanical properties resulting from their particulate structure.![]()
Collapse
Affiliation(s)
- Solmaz Karamikamkar
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Abdelnasser Abidli
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Ehsan Behzadfar
- Department of Chemical Engineering
- Lakehead University
- Thunder Bay
- Canada P7B 5E1
| | - Sasan Rezaei
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Hani E. Naguib
- Smart Polymers & Composites Lab
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Chul B. Park
- Microcellular Plastics Manufacturing Laboratory
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| |
Collapse
|
35
|
Chen HB, Li XL, Chen MJ, He YR, Zhao HB. Self-cross-linked melamine-formaldehyde-pectin aerogel with excellent water resistance and flame retardancy. Carbohydr Polym 2018; 206:609-615. [PMID: 30553364 DOI: 10.1016/j.carbpol.2018.11.041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/29/2018] [Accepted: 11/12/2018] [Indexed: 10/27/2022]
Abstract
Self-cross-linked aerogel based on pectin and melamine-formaldehyde resin (MF) was fabricated via freeze-drying method using water as solvent, where pectin is structural material meanwhile acting as acid to catalyse the cross-linking of MF. The cross-linking reaction easily occurs without additional additives, which can be significantly accelerated at elevated temperatures, with a critical value of about 55 °C. The obtained aerogel shows network microstructures as observed with SEM. With increasing pectin content, the aerogel shows significantly increased compressive modulus. The compressive modulus of M10Pe5 arrives 23.2 MPa, the specific modulus of which arrives 188 MPa cm3/g, while pure MF aerogel are too fragile to keep intact after freeze-dried. The resulting aerogel has good thermal stability, excellent water resistance (can be second dried with limited strength loss) and low flammability. This partially bio-based novel aerogel with impressive properties is promising in many applications.
Collapse
Affiliation(s)
- Hong-Bing Chen
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621000, China.
| | - Xin-Lei Li
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621000, China; School of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Ming-Jun Chen
- School of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Yan-Rong He
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621000, China
| | - Hai-Bo Zhao
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, National Engineering Laboratory of Eco-Friendly Polymeric Materials Sichuan, Sichuan University, Chengdu, 610064, China.
| |
Collapse
|
36
|
Superhydrophobic and Compressible Silica-polyHIPE Covalently Bonded Porous Networks via Emulsion Templating for Oil Spill Cleanup and Recovery. Sci Rep 2018; 8:16783. [PMID: 30429488 PMCID: PMC6235919 DOI: 10.1038/s41598-018-34997-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/22/2018] [Indexed: 11/08/2022] Open
Abstract
We synthesize porous polyHIPE networks with silanol functionalities in the polyHIPE backbone. These silanol functionalities are used for covalent bonding with silica aerogels embedded in the polyHIPE. Covalent bonding between silica and polyHIPE networks are confirmed using Fourier-transform infrared spectroscopy and scanning electron microscopy. Silica aerogels covalently bonded with polyHIPE network show macroporous and mesoporous morphologies and possess excellent properties like high bendability, high elasticity, superhydrophobicity (~160°), low density (~0.128 g/cm3), and low thermal conductivity (~0.045 W/m·K). Oil absorption from water/oil mixtures and recovery of the absorbed oil (by squeezing) from flexible silica-polyHIPE networks is studied. The silica-polyHIPE is shown to absorb crude oil ~16-times its own weight and can be reused multiple times after recovery. Hence, such materials are very important for oil spill cleanup applications from aqueous systems.
Collapse
|
37
|
Rege A, Preibisch I, Schestakow M, Ganesan K, Gurikov P, Milow B, Smirnova I, Itskov M. Correlating Synthesis Parameters to Morphological Entities: Predictive Modeling of Biopolymer Aerogels. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1670. [PMID: 30205623 PMCID: PMC6163492 DOI: 10.3390/ma11091670] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 08/28/2018] [Accepted: 09/03/2018] [Indexed: 12/15/2022]
Abstract
In the past decade, biopolymer aerogels have gained significant research attention due to their typical properties, such as low density and thermal insulation, which are reinforced with excellent biocompatibility, biodegradability, and ease of functionalization. Mechanical properties of these aerogels play an important role in several applications and should be evaluated based on synthesis parameters. To this end, preparation and characterization of polysaccharide-based aerogels, such as pectin, cellulose and k-carrageenan, is first discussed. An interrelationship between their synthesis parameters and morphological entities is established. Such aerogels are usually characterized by a cellular morphology, and under compression undergo large deformations. Therefore, a nonlinear constitutive model is proposed based on large deflections in microcell walls of the aerogel network. Different sizes of the microcells within the network are identified via nitrogen desorption isotherms. Damage is initiated upon pore collapse, which is shown to result from the failure of the microcell wall fibrils. Finally, the model predictions are validated against experimental data of pectin, cellulose, and k-carrageenan aerogels. Given the micromechanical nature of the model, a clear correlation-qualitative and quantitative-between synthesis parameters and the model parameters is also substantiated. The proposed model is shown to be useful in tailoring the mechanical properties of biopolymer aerogels subject to changes in synthesis parameters.
Collapse
Affiliation(s)
- Ameya Rege
- Department of Continuum Mechanics, RWTH Aachen University, Kackertstraße 9, 52072 Aachen, Germany.
| | - Imke Preibisch
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Maria Schestakow
- Institute of Materials Research, German Aerospace Center, Linder Höhe, 51147 Cologne, Germany.
| | - Kathirvel Ganesan
- Institute of Materials Research, German Aerospace Center, Linder Höhe, 51147 Cologne, Germany.
| | - Pavel Gurikov
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Barbara Milow
- Institute of Materials Research, German Aerospace Center, Linder Höhe, 51147 Cologne, Germany.
| | - Irina Smirnova
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany.
| | - Mikhail Itskov
- Department of Continuum Mechanics, RWTH Aachen University, Kackertstraße 9, 52072 Aachen, Germany.
| |
Collapse
|
38
|
Yu ZL, Yang N, Zhou LC, Ma ZY, Zhu YB, Lu YY, Qin B, Xing WY, Ma T, Li SC, Gao HL, Wu HA, Yu SH. Bioinspired polymeric woods. SCIENCE ADVANCES 2018; 4:eaat7223. [PMID: 30105307 PMCID: PMC6086613 DOI: 10.1126/sciadv.aat7223] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/29/2018] [Indexed: 05/19/2023]
Abstract
Woods provide bioinspiration for engineering materials due to their superior mechanical performance. We demonstrate a novel strategy for large-scale fabrication of a family of bioinspired polymeric woods with similar polyphenol matrix materials, wood-like cellular microstructures, and outstanding comprehensive performance by a self-assembly and thermocuring process of traditional resins. In contrast to natural woods, polymeric woods demonstrate comparable mechanical properties (a compressive yield strength of up to 45 MPa), preferable corrosion resistance to acid with no decrease in mechanical properties, and much better thermal insulation (as low as ~21 mW m-1 K-1) and fire retardancy. These bioinspired polymeric woods even stand out from other engineering materials such as cellular ceramic materials and aerogel-like materials in terms of specific strength and thermal insulation properties. The present strategy provides a new possibility for mass production of a series of high-performance biomimetic engineering materials with hierarchical cellular microstructures and remarkable multifunctionality.
Collapse
Affiliation(s)
- Zhi-Long Yu
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Ning Yang
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Li-Chuan Zhou
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Zhi-Yuan Ma
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yin-Bo Zhu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Yu-Yang Lu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Bing Qin
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Wei-Yi Xing
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
| | - Tao Ma
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Si-Cheng Li
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Huai-Ling Gao
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Heng-An Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, Hefei Science Center of CAS, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| |
Collapse
|
39
|
Maleki H, Whitmore L, Hüsing N. Novel multifunctional polymethylsilsesquioxane-silk fibroin aerogel hybrids for environmental and thermal insulation applications. JOURNAL OF MATERIALS CHEMISTRY. A 2018; 6:12598-12612. [PMID: 30713688 PMCID: PMC6333272 DOI: 10.1039/c8ta02821d] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/08/2018] [Indexed: 05/16/2023]
Abstract
The development of aerogels with improved mechanical properties, to expand their utility in high-performance applications, is still a big challenge. Besides fossil-fuel based polymers that have been extensively utilized as platforms to enhance the mechanical strength of silsesquioxane and silica-based aerogels, using green biopolymers from various sustainable renewable resources are currently drawing significant attention. In this work, we process silk fibroin (SF) proteins, extracted from silkworm cocoons, with organically substituted alkoxysilanes in an entirely aqueous based solution via a successive sol-gel approach, and show for the first time that it is possible to produce homogeneous interpenetrated (IPN) polymethylsilsesquioxane (PMSQ)-SF hybrid aerogel monoliths with significantly improved mechanical properties. Emphasis is given to an improvement of the molecular interaction of the two components (SF biopolymer and PMSQ) using a silane coupling agent and to the design of pore structure. We succeeded in developing a novel class of compressible, light-weight, and hierarchically organized meso-macroporous PMSQ-SF IPN hybrid aerogels by carefully controlling the sol-gel parameters at a molecular level. Typically, these aerogels have a compressive strength (δ max) of up to 14 MPa, together with high flexibility in both compression and bending, compressibility up to 80% strain with very low bulk density (ρ b) of 0.08-0.23 g cm-3. By considering these promising properties, the superhydrophobic/oleophilic PMSQ-SF aerogel hybrids exhibited a high competency for selective absorption of a variety of organic pollutants (absorption capacities ∼500-2600 g g-1 %) from water and acted as a high-performance filter for continuous water/oil separation. Moreover, they have demonstrated impressive thermal insulation performance (λ = 0.032-0.044 W m-1 K-1) with excellent fire retardancy and self-extinguishing capabilities. Therefore, the PMSQ-SF aerogel hybrids would be a new class of open porous material and are expected to further extend the practical applications of this class of porous compounds.
Collapse
Affiliation(s)
- Hajar Maleki
- Chemistry and Physics of Materials , Paris-Lodron University Salzburg , Jakob-Haringer-Strasse 2a , 5020 , Salzburg , Austria .
| | - Lawrence Whitmore
- Chemistry and Physics of Materials , Paris-Lodron University Salzburg , Jakob-Haringer-Strasse 2a , 5020 , Salzburg , Austria .
| | - Nicola Hüsing
- Chemistry and Physics of Materials , Paris-Lodron University Salzburg , Jakob-Haringer-Strasse 2a , 5020 , Salzburg , Austria .
| |
Collapse
|
40
|
Maleki H, Montes S, Hayati-Roodbari N, Putz F, Huesing N. Compressible, Thermally Insulating, and Fire Retardant Aerogels through Self-Assembling Silk Fibroin Biopolymers Inside a Silica Structure-An Approach towards 3D Printing of Aerogels. ACS APPLIED MATERIALS & INTERFACES 2018; 10:22718-22730. [PMID: 29864277 PMCID: PMC6513757 DOI: 10.1021/acsami.8b05856] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Thanks to the exceptional materials properties of silica aerogels, this fascinating highly porous material has found high-performance and real-life applications in various modern industries. However, a requirement for a broadening of these applications is based on the further improvement of the aerogel properties, especially with regard to mechanical strength and postsynthesis processability with minimum compromise to the other physical properties. Here, we report an entirely novel, simple, and aqueous-based synthesis approach to prepare mechanically robust aerogel hybrids by cogelation of silk fibroin (SF) biopolymer extracted from silkworm cocoons. The synthesis is based on sequential processes of acid catalyzed (physical) cross-linking of the SF biopolymer and simultaneous polycondensation of tetramethylorthosilicate (TMOS) in the presence of 5-(trimethoxysilyl)pentanoic acid (TMSPA) as a coupling agent and subsequent solvent exchange and supercritical drying. Extensive characterization by solid-state 1H NMR, 29Si NMR, and 2D 1H-29Si heteronuclear correlation (HETCOR) MAS NMR spectroscopy as well as various microscopic techniques (SEM, TEM) and mechanical assessment confirmed the molecular-level homogeneity of the hybrid nanostructure. The developed silica-SF aerogel hybrids contained an improved set of material properties, such as low density (ρb,average = 0.11-0.2 g cm-3), high porosity (∼90%), high specific surface area (∼400-800 m2 g-1), and excellent flexibility in compression (up to 80% of strain) with three orders of magnitude improvement in the Young's modulus over that of pristine silica aerogels. In addition, the silica-SF hybrid aerogels are fire retardant and demonstrated excellent thermal insulation performance with thermal conductivities (λ) of 0.033-0.039 W m-1 K-1. As a further advantage, the formulated hybrid silica-SF aerogel showed an excellent printability in the wet state using a microextrusion-based 3D printing approach. The printed structures had comparable properties to their monolith counterparts, improving postsynthesis processing or shaping of the silica aerogels significantly. Finally, the hybrid silica-SF aerogels reported here represent significant progress for a mechanically customized and robust aerogel for multipurpose applications, namely, as a customized thermal insulation material or as a dual porous open-cell biomaterial used in regenerative medicine.
Collapse
|
41
|
Han X, Hassan KT, Harvey A, Kulijer D, Oila A, Hunt MRC, Šiller L. Bioinspired Synthesis of Monolithic and Layered Aerogels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706294. [PMID: 29691911 DOI: 10.1002/adma.201706294] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 02/22/2018] [Indexed: 06/08/2023]
Abstract
Aerogels are the least dense and most porous materials known to man, with potential applications from lightweight superinsulators to smart energy materials. To date their use has been seriously hampered by their synthesis methods, which are laborious and expensive. Taking inspiration from the life cycle of the damselfly, a novel ambient pressure-drying approach is demonstrated in which instead of employing low-surface-tension organic solvents to prevent pore collapse during drying, sodium bicarbonate solution is used to generate pore-supporting carbon dioxide in situ, significantly reducing energy, time, and cost in aerogel production. The generic applicability of this readily scalable new approach is demonstrated through the production of granules, monoliths, and layered solids with a number of precursor materials.
Collapse
Affiliation(s)
- Xiao Han
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Khalil T Hassan
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
- Department of Physics, College of Science, Anbar University, P.O. Box 55431, Al-Anbar, Al-Ramadi, Iraq
| | - Alan Harvey
- Department of Physics and Energy, University of Limerick, Castletroy, Limerick, V94 T9PX, Ireland
| | - Dejan Kulijer
- National Museum of Bosnia and Herzegovina, Sarajevo, 71000, Bosnia and Herzegovina
| | - Adrian Oila
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Michael R C Hunt
- Centre for Materials Physics, Department of Physics, Durham University, Durham, DH1 3LE, UK
| | - Lidija Šiller
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| |
Collapse
|
42
|
Zhao S, Malfait WJ, Guerrero-Alburquerque N, Koebel MM, Nyström G. Biopolymer-Aerogele und -Schäume: Chemie, Eigenschaften und Anwendungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shanyu Zhao
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Wim J. Malfait
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Natalia Guerrero-Alburquerque
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Matthias M. Koebel
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Gustav Nyström
- Angewandte Holzforschung; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
- Departement Gesundheitswissenschaften und Technologie; ETH Zürich; Schmelzbergstrasse 9 CH-8092 Zürich Schweiz
| |
Collapse
|
43
|
Zhao S, Malfait WJ, Guerrero-Alburquerque N, Koebel MM, Nyström G. Biopolymer Aerogels and Foams: Chemistry, Properties, and Applications. Angew Chem Int Ed Engl 2018; 57:7580-7608. [DOI: 10.1002/anie.201709014] [Citation(s) in RCA: 336] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Shanyu Zhao
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Wim J. Malfait
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Natalia Guerrero-Alburquerque
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Matthias M. Koebel
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Gustav Nyström
- Applied Wood Materials Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
- Department of Health Science and Technology; ETH Zurich; Schmelzbergstrasse 9 CH-8092 Zürich Switzerland
| |
Collapse
|
44
|
Si Y, Wang X, Dou L, Yu J, Ding B. Ultralight and fire-resistant ceramic nanofibrous aerogels with temperature-invariant superelasticity. SCIENCE ADVANCES 2018; 4:eaas8925. [PMID: 29719867 PMCID: PMC5922795 DOI: 10.1126/sciadv.aas8925] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 03/08/2018] [Indexed: 05/19/2023]
Abstract
Ultralight aerogels that are both highly resilient and compressible have been fabricated from various materials including polymer, carbon, and metal. However, it has remained a great challenge to realize high elasticity in aerogels solely based on ceramic components. We report a scalable strategy to create superelastic lamellar-structured ceramic nanofibrous aerogels (CNFAs) by combining SiO2 nanofibers with aluminoborosilicate matrices. This approach causes the random-deposited SiO2 nanofibers to assemble into elastic ceramic aerogels with tunable densities and desired shapes on a large scale. The resulting CNFAs exhibit the integrated properties of flyweight densities of >0.15 mg cm-3, rapid recovery from 80% strain, zero Poisson's ratio, and temperature-invariant superelasticity to 1100°C. The integral ceramic nature also provided the CNFAs with robust fire resistance and thermal insulation performance. The successful synthesis of these fascinating materials may provide new insights into the development of ceramics in a lightweight, resilient, and structurally adaptive form.
Collapse
Affiliation(s)
- Yang Si
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Xueqin Wang
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Lvye Dou
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Jianyong Yu
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Bin Ding
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| |
Collapse
|
45
|
Rovani S, Santos JJ, Corio P, Fungaro DA. Highly Pure Silica Nanoparticles with High Adsorption Capacity Obtained from Sugarcane Waste Ash. ACS OMEGA 2018; 3:2618-2627. [PMID: 30023841 PMCID: PMC6044884 DOI: 10.1021/acsomega.8b00092] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/22/2018] [Indexed: 05/23/2023]
Abstract
Silica nanoparticles (SiO2NPs) from renewable sources can be used in very different materials, such as paints, membranes for fuel cells, Li-ion batteries, adsorbents, catalysts, and so on. Brazil is the world's largest producer of sugarcane and generates huge amounts of sugarcane waste ash (SWA), which is a Si-rich source. This study investigates a method to produce highly pure SiO2NPs from SWA. The SiO2NPs were characterized by inductively coupled plasma optical emission spectroscopy, scanning and transmission electron microscopy (TEM), X-ray diffraction analyses, specific surface area and pore distribution, UV and Fourier transform infrared spectroscopy, and thermogravimetric analyses and applied as an adsorbent material in the removal of acid orange 8 (AO8) dye from aqueous solution. The SiO2 content was 88.68 and 99.08 wt % for SWA and SiO2NPs, respectively. TEM images of SWA and SiO2NPs exhibit drastic alterations of the material size ranging from several micrometers to less than 20 nm. The SiO2NPs showed a specific surface area of 131 m2 g-1 and adsorption capacity of around 230 mg g-1 for acid orange 8 dye. Furthermore, the recycling of the SiO2NPs adsorbent after AO8 adsorption was very satisfactory, with reuse for up to five cycles being possible. The results indicate that it was possible to obtain highly pure silica in a nanosize from the waste material and produce an adsorbent with high adsorption capacity and the possibility of reuse.
Collapse
Affiliation(s)
- Suzimara Rovani
- Instituto
de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP), Av. Prof. Lineu Prestes, 2242, Cidade
Universitária, 05508-000 São Paulo, São Paulo, Brazil
| | - Jonnatan J. Santos
- Instituto
de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, Cidade
Universitária, P.O. Box 26077, 05508-000 São Paulo, São Paulo, Brazil
| | - Paola Corio
- Instituto
de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, Cidade
Universitária, P.O. Box 26077, 05508-000 São Paulo, São Paulo, Brazil
| | - Denise A. Fungaro
- Instituto
de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP), Av. Prof. Lineu Prestes, 2242, Cidade
Universitária, 05508-000 São Paulo, São Paulo, Brazil
| |
Collapse
|
46
|
Yu ZL, Yang N, Apostolopoulou-Kalkavoura V, Qin B, Ma ZY, Xing WY, Qiao C, Bergström L, Antonietti M, Yu SH. Fire-Retardant and Thermally Insulating Phenolic-Silica Aerogels. Angew Chem Int Ed Engl 2018; 57:4538-4542. [DOI: 10.1002/anie.201711717] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Zhi-Long Yu
- Division of Nanomaterials & Chemistry; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology; Department of Chemistry; Hefei Science Center of CAS; University of Science and Technology of China; Hefei 230026 China
| | - Ning Yang
- Division of Nanomaterials & Chemistry; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology; Department of Chemistry; Hefei Science Center of CAS; University of Science and Technology of China; Hefei 230026 China
| | | | - Bing Qin
- Division of Nanomaterials & Chemistry; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology; Department of Chemistry; Hefei Science Center of CAS; University of Science and Technology of China; Hefei 230026 China
| | - Zhi-Yuan Ma
- Division of Nanomaterials & Chemistry; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology; Department of Chemistry; Hefei Science Center of CAS; University of Science and Technology of China; Hefei 230026 China
| | - Wei-Yi Xing
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei 230026 China
| | - Chan Qiao
- Division of Nanomaterials & Chemistry; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology; Department of Chemistry; Hefei Science Center of CAS; University of Science and Technology of China; Hefei 230026 China
| | - Lennart Bergström
- Department of Materials and Environmental Chemistry; Stockholm University; Svante Arrheniusv. 16C 10691 Stockholm Sweden
| | - Markus Antonietti
- Department of Colloid Chemistry; Max-Planck-Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam-Golm Germany
| | - Shu-Hong Yu
- Division of Nanomaterials & Chemistry; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology; Department of Chemistry; Hefei Science Center of CAS; University of Science and Technology of China; Hefei 230026 China
| |
Collapse
|
47
|
Yu Z, Yang N, Apostolopoulou‐Kalkavoura V, Qin B, Ma Z, Xing W, Qiao C, Bergström L, Antonietti M, Yu S. Fire‐Retardant and Thermally Insulating Phenolic‐Silica Aerogels. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711717] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhi‐Long Yu
- Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry Hefei Science Center of CAS University of Science and Technology of China Hefei 230026 China
| | - Ning Yang
- Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry Hefei Science Center of CAS University of Science and Technology of China Hefei 230026 China
| | | | - Bing Qin
- Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry Hefei Science Center of CAS University of Science and Technology of China Hefei 230026 China
| | - Zhi‐Yuan Ma
- Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry Hefei Science Center of CAS University of Science and Technology of China Hefei 230026 China
| | - Wei‐Yi Xing
- State Key Laboratory of Fire Science University of Science and Technology of China Hefei 230026 China
| | - Chan Qiao
- Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry Hefei Science Center of CAS University of Science and Technology of China Hefei 230026 China
| | - Lennart Bergström
- Department of Materials and Environmental Chemistry Stockholm University Svante Arrheniusv. 16C 10691 Stockholm Sweden
| | - Markus Antonietti
- Department of Colloid Chemistry Max-Planck-Institute of Colloids and Interfaces Am Mühlenberg 1 14424 Potsdam-Golm Germany
| | - Shu‐Hong Yu
- Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry Hefei Science Center of CAS University of Science and Technology of China Hefei 230026 China
| |
Collapse
|
48
|
Xu YT, Dai Y, Nguyen TD, Hamad WY, MacLachlan MJ. Aerogel materials with periodic structures imprinted with cellulose nanocrystals. NANOSCALE 2018; 10:3805-3812. [PMID: 29412210 DOI: 10.1039/c7nr07719j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Novel aerogel materials with periodic structures derived from chiral nematic liquid crystalline cellulose nanocrystals (CNCs) are reported. The liquid crystalline structure of phase-separated CNCs is locked by a simple solvent exchange method or silica condensation. Both cellulose and silica/cellulose aerogel materials were obtained after critical point drying, and subsequent calcination of the silica/cellulose composite afforded a silica aerogel with periodic order. Gas adsorption and electron microscopy studies revealed that these materials have high surface areas and a unique chiral nematic structure imparted from the helicoidal CNC template. This is a new, scalable approach to aerogel materials with highly anisotropic structures. The high porosity and periodic, chiral features of these new materials may make them suitable for applications that require anisotropic properties or as hard templates for the construction of other ordered aerogels.
Collapse
Affiliation(s)
- Yi-Tao Xu
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada.
| | | | | | | | | |
Collapse
|
49
|
Follmann HDM, Oliveira ON, Lazarin-Bidóia D, Nakamura CV, Huang X, Asefa T, Silva R. Multifunctional hybrid aerogels: hyperbranched polymer-trapped mesoporous silica nanoparticles for sustained and prolonged drug release. NANOSCALE 2018; 10:1704-1715. [PMID: 29308497 DOI: 10.1039/c7nr08464a] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, we show the synthesis of novel hybrid organic-inorganic aerogel materials with one-dimensionally aligned pores and demonstrate their use as sustained and prolonged release systems for a hydrophobic drug. The materials are synthesized by trapping mesoporous silica nanoparticles within a hyperbranched polymer network made from poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA). The synthetic method involves dispersing mesoporous silica nanoparticles in a polymer solution, then freeze-drying the solution, and finally subjecting the resulting materials to high temperature to activate a solid-state condensation reaction between PVA and PAA. Before trapping the mesoporous silica nanoparticles within the hyperbranched polymeric network, their pores are decorated with hydrophobic groups so that they can serve as good host materials for hydrophobic drugs. The potential application of the hybrid aerogels as drug carriers is demonstrated using the hydrophobic, anti-inflammatory agent dexamethasone (DEX) as a model drug. Due to their hydrophobic pores, the hybrid aerogels show excellent drug loading capacity for DEX, with an encapsulation efficiency higher than 75%. Furthermore, the release pattern of the payloads of DEX encapsulated in the aerogels is highly tailorable (i.e., it can be made faster or slower, as needed) simply by varying the PVA-to-PAA weight ratio in the precursors, and thus the 3-dimensional (3-D) structures of the cross-linked polymers in them. The materials also show sustained drug release, for over 50 days or more. In addition, the aerogels are biocompatible, as demonstrated with Vero cells, and greatly promote the cell proliferation of L929 fibroblasts. Also, the nanoparticles functionalized with quaternary groups and dispersed within the aerogels display bactericidal activity against E. coli, S. aureus, B. subtilis, and P. aeruginosa. These new hybrid aerogels can, thus, be highly appealing biomaterials for sustained and prolonged drug release, such as wound dressing systems.
Collapse
Affiliation(s)
- Heveline D M Follmann
- São Carlos Institute of Physics, University of São Paulo (USP) - PO Box 369, CEP 13566-590, São Carlos, São Paulo, Brazil
| | | | | | | | | | | | | |
Collapse
|
50
|
Wu Z, Zhang L, Li J, Zhao X, Yang C. Organic–inorganic hybridization for the synthesis of robust in situ hydrophobic polypropylsilsesquioxane aerogels with fast oil absorption properties. RSC Adv 2018; 8:5695-5701. [PMID: 35539583 PMCID: PMC9078155 DOI: 10.1039/c7ra13165h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 01/27/2018] [Indexed: 11/21/2022] Open
Abstract
In situ hydrophobic polypropylsilsesquioxane aerogels (PSAs) were successfully synthesized via an organic–inorganic hybridization method by a sol–gel process, in which propyltriethoxysilane (PTES) and tetraethylorthosilicate (TEOS) were used as co-precursors. 29Si NMR and FTIR analyses indicated the high degree of condensation of the precursors and proved the attachment of propyl (–C3H7) groups in PSAs, respectively. By means of incorporating propyl groups, both mechanical robustness and in situ hydrophobicity were obtained. Meanwhile, the mechanical strength, contact angle and density obviously increased with the increase in propyl groups. Under optimized conditions, as-prepared PSA could endure up to a 70% maximum linear compression with few cracks. Benefiting from the robust structure and in situ hydrophobicity, PSAs showed high absorption capacities (8–10 times that of its own weight) and fast absorption properties (<20 s) for a wide range of organic solvents and could be reused at least 5 times. In situ hydrophobic and mechanically robust polypropylsilsesquioxane aerogels (PSAs) were successfully synthesized via an organic–inorganic hybridization method by a sol–gel process.![]()
Collapse
Affiliation(s)
- Ze Wu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Lei Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Ji Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Xiaolu Zhao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Chunhui Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| |
Collapse
|