1
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da Costa Ribeiro A, T. Tominaga T, Moretti Bonadio TG, P. da Silveira N, C. Leite D. A Study on the Behavior of Smart Starch- co-poly( N-isopropylacrylamide) Hybrid Microgels for Encapsulation of Methylene Blue. ACS OMEGA 2024; 9:27349-27357. [PMID: 38947796 PMCID: PMC11209679 DOI: 10.1021/acsomega.4c01947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/12/2024] [Accepted: 05/31/2024] [Indexed: 07/02/2024]
Abstract
Hybrid microgels made from starch nanoparticles (SNPs) and poly(N-isopropylacrylamide) p(NIPAM) were used as promising hosts for the methylene blue (MB) dye. In this paper, these thermoresponsive microgels were characterized by dynamic light scattering (DLS), zeta potential measurements (ZP), and scanning electron microscopy (SEM) and evaluated as carriers for skin-targeted drug delivery. The hybrid microgel-MB systems in PBS solution were also studied by UV-vis spectroscopy and DLS, revealing discernible differences in spectral intensity and absorption shifts compared to microgels devoid of MB. This underscores the successful integration of methylene blue within the SNPs-co-p(NIPAM) microgels, signifying their potential as efficacious drug delivery vehicles.
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Affiliation(s)
- Andresa da Costa Ribeiro
- Applied
Physics in Materials Group, Departamento de Física, Universidade Estadual do Centro-Oeste, Guarapuava, PR 85040-167, Brazil
| | - Tania T. Tominaga
- Applied
Physics in Materials Group, Departamento de Física, Universidade Estadual do Centro-Oeste, Guarapuava, PR 85040-167, Brazil
| | - Taiana G. Moretti Bonadio
- Applied
Physics in Materials Group, Departamento de Física, Universidade Estadual do Centro-Oeste, Guarapuava, PR 85040-167, Brazil
| | - Nádya P. da Silveira
- Post
Graduation Program in Chemistry (PPGQ), Chemistry Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Daiani C. Leite
- Laboratório
de Superfícies e Macromoléculas (SM Lab), Departamento
de Física, Universidade Federal de
Santa Maria, Santa
Maria, RS 97105-900, Brazil
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2
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Hemicellulose: Structure, Chemical Modification, and Application. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2023.101675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
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3
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Cheng H, Shi W, Feng L, Bao J, Chen Q, Zhao W, Zhao C. Facile and green approach towards biomass-derived hydrogel powders with hierarchical micro-nanostructures for ultrafast hemostasis. J Mater Chem B 2021; 9:6678-6690. [PMID: 34378629 DOI: 10.1039/d1tb01477c] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Although a series of biomass-derived hemostats has been developed, the desire for green-prepared hemostatic materials with biosafety has not decreased. Herein, we constructed porous carboxymethyl chitosan/sodium alginate/Ca(OH)2 powders (PCSCPs) with suitable adaptability for instant control of irregular hemorrhage via a facile and green approach. By one-pot chemical crosslinking of carboxymethyl chitosan and sodium alginate, hydrogels were formed and immediately ionically cross-linked along with the generation of Ca(OH)2 to prepare PCSCPs. As hydrogel powders, PCSCPs with abundant hydrophilic carboxymethyl groups and porous hierarchically micro-nanostructures displayed a high water absorption ratio of over 1600%. The PCSCPs were confirmed with favorable hemocompatibility, non-cytotoxic effects and excellent degradability. Hemostasis assays in vitro showed that PCSCPs possessed an outstanding property of platelet activation and red blood cell aggregation. The PCSCPs effectively shortened the hemostatic time and blood loss to ca. 50% in rodent bleeding models compared with medical gauze and commercial chitosan-based hemostats. Furthermore, a mouse subcutaneous implantation model demonstrated an ignorable inflammation response and potential tissue repair capability of PCSCPs. It's believed that green-prepared and biomass-derived PCSCPs are feasible biomedical hemostatic materials in view of engineering and provide a promising platform to design hemostats in prehospital management and clinical settings.
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Affiliation(s)
- Huitong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
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4
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Oevreeide IH, Szydlak R, Luty M, Ahmed H, Prot V, Skallerud BH, Zemła J, Lekka M, Stokke BT. On the Determination of Mechanical Properties of Aqueous Microgels-Towards High-Throughput Characterization. Gels 2021; 7:64. [PMID: 34072792 PMCID: PMC8261632 DOI: 10.3390/gels7020064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 12/15/2022] Open
Abstract
Aqueous microgels are distinct entities of soft matter with mechanical signatures that can be different from their macroscopic counterparts due to confinement effects in the preparation, inherently made to consist of more than one domain (Janus particles) or further processing by coating and change in the extent of crosslinking of the core. Motivated by the importance of the mechanical properties of such microgels from a fundamental point, but also related to numerous applications, we provide a perspective on the experimental strategies currently available and emerging tools being explored. Albeit all techniques in principle exploit enforcing stress and observing strain, the realization differs from directly, as, e.g., by atomic force microscope, to less evident in a fluid field combined with imaging by a high-speed camera in high-throughput strategies. Moreover, the accompanying analysis strategies also reflect such differences, and the level of detail that would be preferred for a comprehensive understanding of the microgel mechanical properties are not always implemented. Overall, the perspective is that current technologies have the capacity to provide detailed, nanoscopic mechanical characterization of microgels over an extended size range, to the high-throughput approaches providing distributions over the mechanical signatures, a feature not readily accessible by atomic force microscopy and micropipette aspiration.
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Affiliation(s)
- Ingrid Haga Oevreeide
- Biophysics and Medical Technology, Department of Physics, NTNU The Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (I.H.O.); (H.A.)
| | - Renata Szydlak
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (R.S.); (M.L.); (J.Z.)
| | - Marcin Luty
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (R.S.); (M.L.); (J.Z.)
| | - Husnain Ahmed
- Biophysics and Medical Technology, Department of Physics, NTNU The Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (I.H.O.); (H.A.)
| | - Victorien Prot
- Biomechanics, Department of Structural Engineering, NTNU The Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (V.P.); (B.H.S.)
| | - Bjørn Helge Skallerud
- Biomechanics, Department of Structural Engineering, NTNU The Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (V.P.); (B.H.S.)
| | - Joanna Zemła
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (R.S.); (M.L.); (J.Z.)
| | - Małgorzata Lekka
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (R.S.); (M.L.); (J.Z.)
| | - Bjørn Torger Stokke
- Biophysics and Medical Technology, Department of Physics, NTNU The Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (I.H.O.); (H.A.)
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5
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Wang Y, Desroches GJ, Macfarlane RJ. Ordered polymer composite materials: challenges and opportunities. NANOSCALE 2021; 13:426-443. [PMID: 33367442 DOI: 10.1039/d0nr07547g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polymer nanocomposites containing nanoscale fillers are an important class of materials due to their ability to access a wide variety of properties as a function of their composition. In order to take full advantage of these properties, it is critical to control the distribution of nanofillers within the parent polymer matrix, as this structural organization affects how the two constituent components interact with one another. In particular, new methods for generating ordered arrays of nanofillers represent a key underexplored research area, as emergent properties arising from nanoscale ordering can be used to introduce novel functionality currently inaccessible in random composites. The knowledge gained from developing such methods will provide important insight into the thermodynamics and kinetics associated with nanomaterial and polymer assembly. These insights will not only benefit researchers working on new composite materials, but will also deepen our understanding of soft matter systems in general. In this review, we summarize contemporary research efforts in manipulating nanofiller organization in polymer nanocomposites and highlight future challenges and opportunities for constructing ordered nanocomposite materials.
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Affiliation(s)
- Yuping Wang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
| | - Griffen J Desroches
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
| | - Robert J Macfarlane
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
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6
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Barhoum A, Jeevanandam J, Rastogi A, Samyn P, Boluk Y, Dufresne A, Danquah MK, Bechelany M. Plant celluloses, hemicelluloses, lignins, and volatile oils for the synthesis of nanoparticles and nanostructured materials. NANOSCALE 2020; 12:22845-22890. [PMID: 33185217 DOI: 10.1039/d0nr04795c] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A huge variety of plants are harvested worldwide and their different constituents can be converted into a broad range of bionanomaterials. In parallel, much research effort in materials science and engineering is focused on the formation of nanoparticles and nanostructured materials originating from agricultural residues. Cellulose (40-50%), hemicellulose (20-40%), and lignin (20-30%) represent major plant ingredients and many techniques have been described that separate the main plant components for the synthesis of nanocelluloses, nano-hemicelluloses, and nanolignins with divergent and controllable properties. The minor components, such as essential oils, could also be used to produce non-toxic metal and metal oxide nanoparticles with high bioavailability, biocompatibility, and/or bioactivity. This review describes the chemical structure, the physical and chemical properties of plant cell constituents, different techniques for the synthesis of nanocelluloses, nanohemicelluloses, and nanolignins from various lignocellulose sources and agricultural residues, and the extraction of volatile oils from plants as well as their use in metal and metal oxide nanoparticle production and emulsion preparation. Furthermore, details about the formation of activated carbon nanomaterials by thermal treatment of lignocellulose materials, a few examples of mineral extraction from agriculture waste for nanoparticle fabrication, and the emerging applications of plant-based nanomaterials in different fields, such as biotechnology and medicine, environment protection, environmental remediation, or energy production and storage, are also included. This review also briefly discusses the recent developments and challenges of obtaining nanomaterials from plant residues, and the issues surrounding toxicity and regulation.
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Affiliation(s)
- Ahmed Barhoum
- Chemistry Department, Faculty of Science, Helwan University, 11795 Cairo, Egypt.
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7
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A biocompatible nanoplatform formed by MgAl-layered double hydroxide modified Mn3O4/N-graphene quantum dot conjugated-polyaniline for pH-triggered release of doxorubicin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111055. [DOI: 10.1016/j.msec.2020.111055] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/25/2020] [Accepted: 05/04/2020] [Indexed: 12/19/2022]
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8
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Wei H, Li W, Chen H, Wen X, He J, Li J. Simultaneous Diels-Alder click reaction and starch hydrogel microsphere production via spray drying. Carbohydr Polym 2020; 241:116351. [PMID: 32507200 DOI: 10.1016/j.carbpol.2020.116351] [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: 01/20/2020] [Revised: 04/18/2020] [Accepted: 04/19/2020] [Indexed: 12/21/2022]
Abstract
Herein, starch was used as a raw material to produce hydrogel microspheres via a strategy that combines spray drying and a Diels-Alder reaction. First, the starch was modified with N-maleoyl alanine and succinic acid amide. Second, starch hydrogel microspheres (SGPs) and drug-loaded hydrogel microspheres (5-Fu/SGPs) were produced by spray drying an aqueous solution of the as-prepared modified starch, forming chemical crosslinks via an in situ Diels-Alder reaction during the spray drying. The microspheres slowed the release rate of 5-Fu. In vitro cytotoxicity tests indicated that the SGPs are non-toxic for model human breast cancer cells; however, the 5-Fu/SGPs demonstrated clear cytotoxicity for human breast cancer cells. Taking into account the ease of the spray drying process and the good performance of the prepared microspheres, the strategy presented here has the potential to be applied to the green preparation of drug-loaded hydrogel microspheres.
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Affiliation(s)
- Hongliang Wei
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China.
| | - Weikun Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China
| | - Hongli Chen
- The Key Laboratory of Biomedical Material, School of Life Science and Technology, Xinxiang Medical University, Xinxiang, PR China
| | - Xuejun Wen
- School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Juan He
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China
| | - Jingjing Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China.
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9
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Wei H, Yang X, Chu H, Li J. Facile and green preparation of thermal and ph sensitive hydrogel microspheres based on spray drying and the diels–alder reaction. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hongliang Wei
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| | - Xiaoqing Yang
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| | - Huijuan Chu
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
| | - Jingjing Li
- College of Chemistry, Chemical and Environmental EngineeringHenan University of Technology Zhengzhou 450001 People's Republic of China
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10
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Feng Z, Danjo T, Odelius K, Hakkarainen M, Iwata T, Albertsson AC. Recyclable Fully Biobased Chitosan Adsorbents Spray-Dried in One Pot to Microscopic Size and Enhanced Adsorption Capacity. Biomacromolecules 2019; 20:1956-1964. [PMID: 30920203 DOI: 10.1021/acs.biomac.9b00186] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A facile one-pot spray-drying process was developed for fabrication and in situ crosslinking of chitosan microspheres to improve the adsorption capacity by microscopic design. A fully biobased nature was achieved by utilizing genipin (GP) as a crosslinking agent and chitosan-derived nanographene oxide (nGO) as a property tuner. The produced chitosan microspheres were further proven as powerful adsorbents for common wastewater contaminants such as anionic dyes and pharmaceutical contaminants, here modeled by methyl orange (MO) and diclofenac sodium (DCF). By regulating the amount of GP and nGO, as well as by controlling the process parameters including the spray-drying inlet temperature and postheat treatment, the surface morphology, size, zeta potential, and adsorption efficiency of the microspheres could be tuned accordingly. The adsorption efficiency for MO and DCF reached 98.9 and 100%, respectively. The microspheres retained high DCF adsorption efficiency after six adsorption and desorption cycles, and the recyclability was improved by the incorporated nGO. The fabricated microspheres, thus, have great potential as reusable and eco-friendly adsorbents.
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Affiliation(s)
- Zhaoxuan Feng
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen 58 , 10044 Stockholm , Sweden
| | - Takahiro Danjo
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen 58 , 10044 Stockholm , Sweden.,Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences , The University of Tokyo , 1-1-1 Yayoi , Bunkyo-ku, Tokyo 113-8657 , Japan
| | - Karin Odelius
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen 58 , 10044 Stockholm , Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen 58 , 10044 Stockholm , Sweden
| | - Tadahisa Iwata
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences , The University of Tokyo , 1-1-1 Yayoi , Bunkyo-ku, Tokyo 113-8657 , Japan
| | - Ann-Christine Albertsson
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , Teknikringen 58 , 10044 Stockholm , Sweden
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11
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Chen J, Lv L, Li Y, Ren X, Luo H, Gao Y, Yan H, Li Y, Qu Y, Yang L, Li X, Zeng R. Preparation and evaluation of Bletilla striata polysaccharide/graphene oxide composite hemostatic sponge. Int J Biol Macromol 2019; 130:827-835. [PMID: 30807800 DOI: 10.1016/j.ijbiomac.2019.02.137] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/19/2019] [Accepted: 02/22/2019] [Indexed: 10/27/2022]
Abstract
Uncontrolled bleeding is an important cause of military and civilian casualties. GO has received more attention in the field of hemostasis. However, pure GO has various limitation in application due to its potential thrombosis, hemolytic and cytotoxicity. Herein, we present a simple, rapid and low-cost method to combine GO and natural polysaccharides by hydrogen bonding to prepare a new material Bletilla striata polysaccharide/graphene oxide composite sponge (BGCS). The BGCS was successfully synthesized and characterized by SEM, IR, RAMAN, XRD and Zeta potential analyzer analysis. The BGCS exhibited favorable biocompatibility. Besides, the porosity of BGCS was higher than 90% and showed good water absorption capacity. The results of whole blood coagulation evaluation showed that the BGCS can promote blood coagulation within 30 s without anticoagulant, showing excellent hemostatic effect. Further coagulation mechanism studies indicated that the surface of the BGCS possessed a high charge (-27.3 ± 0.9 mV) and showed strong platelet stimulation, the BGCS can also induce red blood cell aggregation, accelerate fibrin formation and accelerate blood coagulation. Therefore, the BGCS can stop bleeding within 50 s in rat-tail amputation models. The BGCS provides a new perspective for the safe application of GO in the field of trauma hemostasis.
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Affiliation(s)
- Junke Chen
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Luyang Lv
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Ying Li
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Xiaodong Ren
- Medical College, Guizhou University, Guiyang 550025, China
| | - Hao Luo
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Yuanping Gao
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Hengxiu Yan
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Yanfang Li
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Yan Qu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Lixin Yang
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - XiuJun Li
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968, USA
| | - Rui Zeng
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China.
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12
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Shao H, Sun H, Yang B, Zhang H, Hu Y. Facile and green preparation of hemicellulose-based film with elevated hydrophobicity via cross-linking with citric acid. RSC Adv 2019; 9:2395-2401. [PMID: 35520521 PMCID: PMC9059884 DOI: 10.1039/c8ra09937e] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/08/2019] [Indexed: 01/04/2023] Open
Abstract
Hemicellulose has shown great potential in food packaging due to its excellent biodegradability and low oxygen permeability. However, its strong hydrophilicity leads to poor moisture resistance and hinders its wide application. To address this issue, herein a ternary carboxylic acid, citric acid (CA), was incorporated into hemicellulose as esterifying agent to form a crosslinking structure via the esterification reaction. The CA-modified hemicellulose films showed an increased contact angle of 87.5° (vs. 40.5° for unmodified film), demonstrating that the hydrophobicity of hemicellulose had been improved significantly. In addition, the esterification/cross-linking modification enhanced oxygen barrier performance with oxygen permeability decreasing from 1053 (cm3 μm) (m2 d kPa)-1 to 1.8 (cm3 μm) (m2 d kPa)-1. Moreover, the tensile strength rose to a peak value and then fell back at higher CA content. Effect of CA addition on elongation at break exhibited an opposite trend. The modified hemicellulose films with 20% CA addition possessed the highest tensile strength and the lowest elongation at break. Morphology observation with scanning electron microscopy indicated that at CA content exceeding 20%, the modified films were dense with a smooth surface, illustrating the improvement of phase compatibility. A possible mechanism for esterification/cross-linking was proposed to elucidate the connection between CA addition and film performances.
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Affiliation(s)
- Hui Shao
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 P. R. China
| | - Hui Sun
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 P. R. China
| | - Biao Yang
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 P. R. China
| | - Huijuan Zhang
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 P. R. China
| | - Yu Hu
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing 100048 P. R. China
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13
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Keskin D, Mergel O, van der Mei HC, Busscher HJ, van Rijn P. Inhibiting Bacterial Adhesion by Mechanically Modulated Microgel Coatings. Biomacromolecules 2019; 20:243-253. [PMID: 30512925 PMCID: PMC6335679 DOI: 10.1021/acs.biomac.8b01378] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/02/2018] [Indexed: 02/06/2023]
Abstract
Bacterial infection is a severe problem especially when associated with biomedical applications. This study effectively demonstrates that poly- N-isopropylmethacrylamide based microgel coatings prevent bacterial adhesion. The coating preparation via a spraying approach proved to be simple and both cost and time efficient creating a homogeneous dense microgel monolayer. In particular, the influence of cross-linking density, microgel size, and coating thickness was investigated on the initial bacterial adhesion. Adhesion of Staphylococcus aureus ATCC 12600 was imaged using a parallel plate flow chamber setup, which gave insights in the number of the total bacteria adhering per unit area onto the surface and the initial bacterial deposition rates. All microgel coatings successfully yielded more than 98% reduction in bacterial adhesion. Bacterial adhesion depends both on the cross-linking density/stiffness of the microgels and on the thickness of the microgel coating. Bacterial adhesion decreased when a lower cross-linking density was used at equal coating thickness and at equal cross-linking density with a thicker microgel coating. The highest reduction in the number of bacterial adhesion was achieved with the microgel that produced the thickest coating ( h = 602 nm) and had the lowest cross-linking density. The results provided in this paper indicate that microgel coatings serve as an interesting and easy applicable approach and that it can be fine-tuned by manipulating the microgel layer thickness and stiffness.
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Affiliation(s)
- Damla Keskin
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Olga Mergel
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henny C. van der Mei
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henk J. Busscher
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Patrick van Rijn
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- University of
Groningen, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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14
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Cross-linking and modification of sodium alginate biopolymer for dye removal in aqueous solution. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2557-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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15
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Backes S, Von Klitzing R. Nanomechanics and Nanorheology of Microgels at Interfaces. Polymers (Basel) 2018; 10:E978. [PMID: 30960903 PMCID: PMC6404016 DOI: 10.3390/polym10090978] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/19/2018] [Accepted: 08/20/2018] [Indexed: 11/16/2022] Open
Abstract
The review addresses nanomechanics and nanorheology of stimuli responsive microgels adsorbed at an interface. In order to measure the mechanical properties on a local scale, an atomic force microscope is used. The tip presents an indenter with a radius of curvature of a few 10 s of nm. Static indentation experiments and dynamic studies with an excited cantilever are presented. The effect of several internal and external parameters on the mechanical properties is reviewed. The focus is on the correlation between the swelling abilities of the gels and their mechanical properties. Several results are surprising and show that the relationship is not as simple as one might expect.
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Affiliation(s)
- Sebastian Backes
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin, Strasse des 17. Juni 124, D⁻10623 Berlin, Germany.
| | - Regine Von Klitzing
- Soft Matter at Interfaces, Department of Physics, TU Darmstadt, Alarich-Weiss-Strasse 10, D⁻62487 Darmstadt, Germany.
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16
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Abstract
Electrically conducting polymers such as polyaniline, polypyrrole, polythiophene, and their derivatives (mainly aniline oligomer and poly(3,4-ethylenedioxythiophene)) with good biocompatibility find wide applications in biomedical fields including bioactuators, biosensors, neural implants, drug delivery systems, and tissue engineering scaffolds. This review focuses on these conductive polymers for tissue engineering applications. Conductive polymers exhibit promising conductivity as bioactive scaffolds for tissue regeneration, and their conductive nature allows cells or tissue cultured on them to be stimulated by electrical signals. However, their mechanical brittleness and poor processability restrict their application. Therefore, conductive polymeric composites based on conductive polymers and biocompatible biodegradable polymers (natural or synthetic) were developed. The major objective of this review is to summarize the conductive biomaterials used in tissue engineering including conductive composite films, conductive nanofibers, conductive hydrogels, and conductive composite scaffolds fabricated by various methods such as electrospinning, coating, or deposition by in situ polymerization. Furthermore, recent progress in tissue engineering applications using these conductive biomaterials including bone tissue engineering, muscle tissue engineering, nerve tissue engineering, cardiac tissue engineering, and wound healing application are discussed in detail.
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Affiliation(s)
- Baolin Guo
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China
| | - Peter X. Ma
- Department of Biologic and Materials Sciences, University of Michigan, 1011, North University Ave., Room 2209, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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17
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Zarrintaj P, Bakhshandeh B, Saeb MR, Sefat F, Rezaeian I, Ganjali MR, Ramakrishna S, Mozafari M. Oligoaniline-based conductive biomaterials for tissue engineering. Acta Biomater 2018; 72:16-34. [PMID: 29625254 DOI: 10.1016/j.actbio.2018.03.042] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 02/23/2018] [Accepted: 03/27/2018] [Indexed: 01/18/2023]
Abstract
The science and engineering of biomaterials have improved the human life expectancy. Tissue engineering is one of the nascent strategies with an aim to fulfill this target. Tissue engineering scaffolds are one of the most significant aspects of the recent tissue repair strategies; hence, it is imperative to design biomimetic substrates with suitable features. Conductive substrates can ameliorate the cellular activity through enhancement of cellular signaling. Biocompatible polymers with conductivity can mimic the cells' niche in an appropriate manner. Bioconductive polymers based on aniline oligomers can potentially actualize this purpose because of their unique and tailoring properties. The aniline oligomers can be positioned within the molecular structure of other polymers, thus painter acting with the side groups of the main polymer or acting as a comonomer in their backbone. The conductivity of oligoaniline-based conductive biomaterials can be tailored to mimic the electrical and mechanical properties of targeted tissues/organs. These bioconductive substrates can be designed with high mechanical strength for hard tissues such as the bone and with high elasticity to be used for the cardiac tissue or can be synthesized in the form of injectable hydrogels, particles, and nanofibers for noninvasive implantation; these structures can be used for applications such as drug/gene delivery and extracellular biomimetic structures. It is expected that with progress in the fields of biomaterials and tissue engineering, more innovative constructs will be proposed in the near future. This review discusses the recent advancements in the use of oligoaniline-based conductive biomaterials for tissue engineering and regenerative medicine applications. STATEMENT OF SIGNIFICANCE The tissue engineering applications of aniline oligomers and their derivatives have recently attracted an increasing interest due to their electroactive and biodegradable properties. However, no reports have systematically reviewed the critical role of oligoaniline-based conductive biomaterials in tissue engineering. Research on aniline oligomers is growing today opening new scenarios that expand the potential of these biomaterials from "traditional" treatments to a new era of tissue engineering. The conductivity of this class of biomaterials can be tailored similar to that of tissues/organs. To the best of our knowledge, this is the first review article in which such issue is systematically reviewed and critically discussed in the light of the existing literature. Undoubtedly, investigations on the use of oligoaniline-based conductive biomaterials in tissue engineering need further advancement and a lot of critical questions are yet to be answered. In this review, we introduce the salient features, the hurdles that must be overcome, the hopes, and practical constraints for further development.
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18
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Zhao W, Liu Q, Zhang X, Su B, Zhao C. Rationally designed magnetic nanoparticles as anticoagulants for blood purification. Colloids Surf B Biointerfaces 2018; 164:316-323. [PMID: 29413611 DOI: 10.1016/j.colsurfb.2018.01.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/24/2018] [Accepted: 01/25/2018] [Indexed: 02/05/2023]
Abstract
Heparin-based anticoagulant drugs are widely used for the prevention of blood clotting during extracorporeal circuit (bloodlines or cassette system) and surgical procedures as well as for the treatment of thromboembolic events. However, these anticoagulants are associated with bleeding risks that demand continuous monitoring and neutralization with antidotes. We explore the possibility of utilizing anticoagulants for blood clotting prevention, then removing them before transfusing the blood back to body, thus avoid bleeding risks. Here, we report on the strength of a strategy to solve problems with bleeding risks by rationally designing and using superparamagnetic iron oxide nanoparticles (SPIONs) with layer-by-layer self-assembled heparin. The morphology of these SPIONs was investigated by using dynamic light scattering and transmission electron microscopy. In vitro assays demonstrated superior efficacy and safety profiles and significantly mitigated conventional heparin-induced bleeding risks. In addition, the in vivo assay in a model animal (dog) proved that it is possible to use magnetic anticoagulant (MAC) in blood purification. The new magnetic anticoagulant drugs may benefit patients undergoing high-risk surgical procedures and may overcome anticoagulant-related bleeding problems to a great extent.
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Affiliation(s)
- Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Qiang Liu
- West China Hospital, Department of Nephrology, Sichuan University, Chengdu, 610041, China
| | - Xiang Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Baihai Su
- West China Hospital, Department of Nephrology, Sichuan University, Chengdu, 610041, China.
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
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19
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Microgels from microfluidic templating and photoinduced crosslinking of cinnamylidene acetic acid modified precursors. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2016.12.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Abstract
Microgels are macromolecular networks swollen by the solvent in which they are dissolved. They are unique systems that are distinctly different from common colloids, such as, e.g., rigid nanoparticles, flexible macromolecules, micelles, or vesicles. The size of the microgel networks is in the range of several micrometers down to nanometers (then sometimes called "nanogels"). In a collapsed state, they might resemble hard colloids but they can still contain significant amounts of solvent. When swollen, they are soft and have a fuzzy surface with dangling chains. The presence of cross-links provides structural integrity, in contrast to linear and (hyper)branched polymers. Obviously, the cross-linker content will allow control of whether microgels behave more "colloidal" or "macromolecular". The combination of being soft and porous while still having a stable structure through the cross-linked network allows for designing microgels that have the same total chemical composition, but different properties due to a different architecture. Microgels based, e.g., on two monomers but have either statistical spatial distribution, or a core-shell or hollow-two-shell morphology will display very different properties. Microgels provide the possibility to introduce chemical functionality at different positions. Combining architectural diversity and compartmentalization of reactive groups enables thus short-range coexistence of otherwise instable combinations of chemical reactivity. The open microgel structure is beneficial for uptake-release purposes of active substances. In addition, the openness allows site-selective integration of active functionalities like reactive groups, charges, or markers by postmodification processes. The unique ability of microgels to retain their colloidal stability and swelling degree both in water and in many organic solvents allows use of different chemistries for the modification of microgel structure. The capability of microgels to adjust both their shape and volume in response to external stimuli (e.g., temperature, ionic strength and composition, pH, electrochemical stimulus, pressure, light) provides the opportunity to reversibly tune their physicochemical properties. From a physics point of view, microgels are particularly intriguing and challenging, since their intraparticle properties are intimately linked to their interparticle behavior. Microgels, which reveal interface activity without necessarily being amphiphilic, develop even more complex behavior when located at fluid or solid interfaces: the sensitivity of microgels to various stimuli allows, e.g., the modulation of emulsion stability, adhesion, sensing, and filtration. Hence, we envision an ever-increasing relevance of microgels in these fields including biomedicine and process technology. In sum, microgels unite properties of very different classes of materials. Microgels can be based on very different (bio)macromolecules such as, e.g., polysaccharides, peptides, or DNA, as well as on synthetic polymers. This Account focuses on synthetic microgels (mainly based on acrylamides); however, the general, fundamental features of microgels are independent of the chemical nature of the building moieties. Microgels allow combining features of chemical functionality, structural integrity, macromolecular architecture, adaptivity, permeability, and deformability in a unique way to include the "best" of the colloidal, polymeric, and surfactant worlds. This will open the door for novel applications in very different fields such as, e.g., in sensors, catalysis, and separation technology.
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Affiliation(s)
- Felix A. Plamper
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Walter Richtering
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
- DWI-Leibniz-Institute for Interactive Materials, 52074 Aachen, Germany
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21
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Zhang M, Wang R, Shi Z, Huang X, Zhao W, Zhao C. Multi-responsive, tough and reversible hydrogels with tunable swelling property. JOURNAL OF HAZARDOUS MATERIALS 2017; 322:499-507. [PMID: 27776860 DOI: 10.1016/j.jhazmat.2016.10.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 09/25/2016] [Accepted: 10/09/2016] [Indexed: 06/06/2023]
Abstract
A novel family of multi-responsive, tough, and reversible hydrogels were prepared by the combination of dipole-dipole interaction, hydrogen bonding interaction and slightly chemical cross-linking, using monomers of acrylonitrile, sodium allylsulfonate and itaconic acid. Reversible gel-sol transition was achieved by the flexible conversion of the dipole-dipole interactions between acrylonitrile-acrylonitrile and acrylonitrile-sodium thiocyanate, and the hydrogels could freely form desired shapes. The dipole-dipole and hydrogen bonding interactions improved the mechanical strength of the hydrogels with a compressive stress of 2.38MPa. Meanwhile, the hydrogels sustained cyclic compressive tests with 60% strain, and exhibited excellent elastic property. The hydrogels were sensitive to pH and ionic strength, and could keep their perfect spherical structures without any obvious cracks even after immersing in strong ionic strength (or pH) solution for several reversible cycles. Furthermore, the hydrogels were recycled for environmental pollution remediation, and showed great potential to be applied in water treatments and other related fields.
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Affiliation(s)
- Man Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Rui Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Zhenqiang Shi
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Xuelian Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China; Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58 SE-100 44, Stockholm, Sweden.
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
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22
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Functional Polymers for Biointerface Engineering. INT J POLYM SCI 2017. [DOI: 10.1155/2017/2474397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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23
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Richardson JJ, Cui J, Björnmalm M, Braunger JA, Ejima H, Caruso F. Innovation in Layer-by-Layer Assembly. Chem Rev 2016; 116:14828-14867. [PMID: 27960272 DOI: 10.1021/acs.chemrev.6b00627] [Citation(s) in RCA: 451] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Methods for depositing thin films are important in generating functional materials for diverse applications in a wide variety of fields. Over the last half-century, the layer-by-layer assembly of nanoscale films has received intense and growing interest. This has been fueled by innovation in the available materials and assembly technologies, as well as the film-characterization techniques. In this Review, we explore, discuss, and detail innovation in layer-by-layer assembly in terms of past and present developments, and we highlight how these might guide future advances. A particular focus is on conventional and early developments that have only recently regained interest in the layer-by-layer assembly field. We then review unconventional assemblies and approaches that have been gaining popularity, which include inorganic/organic hybrid materials, cells and tissues, and the use of stereocomplexation, patterning, and dip-pen lithography, to name a few. A relatively recent development is the use of layer-by-layer assembly materials and techniques to assemble films in a single continuous step. We name this "quasi"-layer-by-layer assembly and discuss the impacts and innovations surrounding this approach. Finally, the application of characterization methods to monitor and evaluate layer-by-layer assembly is discussed, as innovation in this area is often overlooked but is essential for development of the field. While we intend for this Review to be easily accessible and act as a guide to researchers new to layer-by-layer assembly, we also believe it will provide insight to current researchers in the field and help guide future developments and innovation.
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Affiliation(s)
- Joseph J Richardson
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia.,Manufacturing, CSIRO , Clayton, Victoria 3168, Australia
| | - Jiwei Cui
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Mattias Björnmalm
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Julia A Braunger
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Hirotaka Ejima
- Institute of Industrial Science, The University of Tokyo , Tokyo 153-8505, Japan
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
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24
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Huang X, Wang R, Lu T, Zhou D, Zhao W, Sun S, Zhao C. Heparin-Like Chitosan Hydrogels with Tunable Swelling Behavior, Prolonged Clotting Times, and Prevented Contact Activation and Complement Activation. Biomacromolecules 2016; 17:4011-4020. [DOI: 10.1021/acs.biomac.6b01386] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xuelian Huang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Rui Wang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ting Lu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Dongxu Zhou
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Weifeng Zhao
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Shudong Sun
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Changsheng Zhao
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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25
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Glavas L, Odelius K, Albertsson AC. Simultaneous Polymerization and Polypeptide Particle Production via Reactive Spray-Drying. Biomacromolecules 2016; 17:2930-6. [PMID: 27445061 PMCID: PMC5815657 DOI: 10.1021/acs.biomac.6b00747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/20/2016] [Indexed: 11/28/2022]
Abstract
A method for producing polypeptide particles via in situ polymerization of N-carboxyanhydrides during spray-drying has been developed. This method was enabled by the development of a fast and robust synthetic pathway to polypeptides using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as an initiator for the ring-opening polymerization of N-carboxyanhydrides. The polymerizations finished within 5 s and proved to be very tolerant toward impurities such as amino acid salts and water. The formed particles were prepared by mixing the monomer, N-carboxyanhydride of l-glutamic acid benzyl ester (NCAGlu) and the initiator (DBU) during the atomization process in the spray-dryer and were spherical with a size of ∼1 μm. This method combines two steps; making it a straightforward process that facilitates the production of polypeptide particles. Hence, it furthers the use of spray-drying and polypeptide particles in the pharmaceutical industry.
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Affiliation(s)
- Lidija Glavas
- Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Karin Odelius
- Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Ann-Christine Albertsson
- Fiber and Polymer Technology, School of Chemical Science and Engineering, KTH, Royal Institute of Technology , SE-100 44 Stockholm, Sweden
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26
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He M, Jiang H, Wang R, Xie Y, Zhao W, Zhao C. A versatile approach towards multi-functional surfaces via covalently attaching hydrogel thin layers. J Colloid Interface Sci 2016; 484:60-69. [PMID: 27591729 DOI: 10.1016/j.jcis.2016.08.066] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 01/07/2023]
Abstract
In this study, a robust and straightforward method to covalently attach multi-functional hydrogel thin layers onto substrates was provided. In our strategy, double bonds were firstly introduced onto substrates to provide anchoring points for hydrogel layers, and then hydrogel thin layers were prepared via surface cross-linking copolymerization of the immobilized double bonds with functional monomers. Sulfobetaine methacrylate (SBMA), sodium allysulfonate (SAS), and methyl acryloyloxygen ethyl trimethyl ammonium chloride (METAC) were selected as functional monomers to form hydrogel layers onto polyether sulfone (PES) membrane surfaces, respectively. The thickness of the formed hydrogel layers could be controlled, and the layers showed excellent long-term stability. The PSBMA hydrogel layer exhibited superior antifouling property demonstrated by undetectable protein adsorption and excellent bacteria resistant property; after attaching PSAS hydrogel layer, the membrane showed incoagulable surface property when contacting with blood confirmed by the activated partial thromboplastin time (APTT) value exceeding 600s; while, the PMETAC hydrogel thin layer could effectively kill attached bacteria. The proposed method provides a new platform to directly modify material surfaces with desired properties, and thus has great potential to be widely used in designing materials for blood purification, drug delivery, wound dressing, and intelligent biosensors.
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Affiliation(s)
- Min He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Huiyi Jiang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Rui Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Yi Xie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China; Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58, SE-100 44 Stockholm, Sweden.
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
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27
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Zhao W, Huang X, Wang Y, Sun S, Zhao C. A recyclable and regenerable magnetic chitosan absorbent for dye uptake. Carbohydr Polym 2016; 150:201-8. [PMID: 27312630 DOI: 10.1016/j.carbpol.2016.05.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/05/2016] [Accepted: 05/12/2016] [Indexed: 10/21/2022]
Abstract
A recyclable and regenerable magnetic polysaccharide absorbent for methylene blue (MB) removal was prepared by coating magnetic polyethyleneimine nanoparticles (PEI@MNPs) with sulfonated chitosan (SCS) and further cross-linked with glutaraldehyde. The driving force for coating is the electrostactic interaction between positively charged PEI and negatively charged SCS. Infrared spectra, zeta potential, thermal gravimetric analysis and X-ray diffraction demonstrated the successful synthesis of magnetic polysaccharide absorbent. The self-assembly of polysaccharide with magnetic nanopartices did not alter the saturation magnetization value of the absorbent confirmed by vibrating sample magnetometer. The nanoparticles showed fast removal (about 30min reached equilibrium) of MB. In particular, the removal ability of MB after desorption did not reduce, demonstrating an excellent regeneration ability. Our study provides new insights into utilizing polysaccharides for environmental remediation and creating advanced magnetic materials for various promising applications.
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Affiliation(s)
- Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China; Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58 SE-100 44, Stockholm, Sweden.
| | - Xuelian Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China.
| | - Yilin Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China.
| | - Shudong Sun
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China.
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China.
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28
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Yuan W, Chen X. Star-shaped and star-block polymers with a porphyrin core: from LCST–UCST thermoresponsive transition to tunable self-assembly behaviour and fluorescence performance. RSC Adv 2016. [DOI: 10.1039/c5ra21647h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The micelles self-assembled from star-shaped and star-block copolymers present a transition of LCST–UCST thermoresponsive properties through a facile quaternization reaction.
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Affiliation(s)
- Weizhong Yuan
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
| | - Xiangnan Chen
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
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29
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He C, Shi ZQ, Cheng C, Nie CX, Zhou M, Wang LR, Zhao CS. Highly swellable and biocompatible graphene/heparin-analogue hydrogels for implantable drug and protein delivery. RSC Adv 2016; 6:71893-71904. [DOI: 10.1039/c6ra14592b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2025] Open
Abstract
The GO/heparin-analogue hydrogels with hemo- and cyto-compatibility could be used in various biomedical fields, such as drug and protein delivery, tissue regeneration scaffold, and other biomedical systems.
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Affiliation(s)
- Chao He
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zhen-Qiang Shi
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chong Cheng
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chuan-Xiong Nie
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Mi Zhou
- Institute of Textile
- Sichuan University
- Chengdu 610065
- China
| | - Ling-Ren Wang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chang-Sheng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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30
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Zhao W, Odelius K, Edlund U, Zhao C, Albertsson AC. In Situ Synthesis of Magnetic Field-Responsive Hemicellulose Hydrogels for Drug Delivery. Biomacromolecules 2015. [PMID: 26196600 PMCID: PMC4535706 DOI: 10.1021/acs.biomac.5b00801] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
A one-pot
synthetic methodology for fabricating stimuli-responsive
hemicellulose-based hydrogels was developed that consists of the in
situ formation of magnetic iron oxide (Fe3O4) nanoparticles during the covalent cross-linking of O-acetyl-galactoglucomannan
(AcGGM). The Fe3O4 nanoparticle content controlled
the thermal stability, macrostructure, swelling behavior, and magnetization
of the hybrid hydrogels. In addition, the magnetic field-responsive
hemicellulose hydrogels (MFRHHs) exhibited excellent adsorption and
controlled release profiles with bovine serum albumin (BSA) as the
model drug. Therefore, the MFRHHs have great potential to be utilized
in the biomedical field for tissue engineering applications, controlled
drug delivery, and magnetically assisted bioseparation. Magnetic field-responsive
hemicellulose hydrogels, prepared using a straightforward one-step
process, expand the applications of biomass-derived polysaccharides
by combining the renewability of hemicellulose and the magnetism of
Fe3O4 nanoparticles.
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Affiliation(s)
- Weifeng Zhao
- †Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58 SE-100 44, Stockholm, Sweden.,‡College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, China
| | - Karin Odelius
- †Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58 SE-100 44, Stockholm, Sweden
| | - Ulrica Edlund
- †Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58 SE-100 44, Stockholm, Sweden
| | - Changsheng Zhao
- ‡College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, China
| | - Ann-Christine Albertsson
- †Fiber and Polymer Technology, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Teknikringen 56-58 SE-100 44, Stockholm, Sweden
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