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Promdontree P, Kheolamai P, Ounkaew A, Narain R, Ummartyotin S. Characterization of Cellulose Fiber Derived from Hemp and Polyvinyl Alcohol-Based Composite Hydrogel as a Scaffold Material. Polymers (Basel) 2023; 15:4098. [PMID: 37896343 PMCID: PMC10611065 DOI: 10.3390/polym15204098] [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: 09/12/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Cellulose nanocrystals (CNCs) were successfully extracted and purified from hemp using an alkaline treatment and bleaching process and subsequently used in conjunction with polyvinyl alcohol to form a composite hydrogel. Cellulose nanocrystals (1-10% (w/v)) were integrated into polyvinyl alcohol, and sodium tetraborate (borax) was employed as a crosslinking agent. Due to the small number of cellulose nanocrystals, no significant peak change was observed in the FT-IR spectra compared to pristine polyvinyl alcohol. The porosity was created upon the removal of the water molecules, and the material was thermally stable up to 200 °C. With the presence of cellulose nanocrystals, the melting temperature was slightly shifted to a higher temperature, while the glass transition temperature remained practically unchanged. The swelling behavior was examined for 180 min in deionized water and PBS solution (pH 7.4) at 37 °C. The degree of swelling of the composite with cellulose nanocrystals was found to be higher than that of pristine PVA hydrogel. The cell viability (%) of the prepared hydrogel with different proportions of cellulose nanocrystals was higher than that of pristine PVA hydrogel. Based on the results, the prepared composite hydrogels from cellulose nanocrystals extracted from hemp and polyvinyl alcohol were revealed to be an excellent candidate for scaffold material for medical usage.
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Affiliation(s)
- Praewa Promdontree
- Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Pathumthani 12121, Thailand;
| | - Pakpoom Kheolamai
- Division of Cell Biology, Department of Preclinical Sciences, Faculty of Medicine, Thammasat University, Pathumthani 12120, Thailand;
| | - Artjima Ounkaew
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2G6, Canada
| | - Ravin Narain
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2G6, Canada
| | - Sarute Ummartyotin
- Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Pathumthani 12121, Thailand;
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
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Ye Z, Lu H, Chai G, Wu C, Chen J, Lv L. Glycerol modified poly(vinyl alcohol)/poly(ethylene glycol) self‐healing hydrogel for artificial cartilage. POLYM INT 2022. [DOI: 10.1002/pi.6444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zishuo Ye
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 P. R. China
| | - Hailin Lu
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 P. R. China
| | - Guiquan Chai
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 P. R. China
| | - Changlei Wu
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 P. R. China
| | - Jian Chen
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 P. R. China
| | - Leifeng Lv
- Department of Orthopadics The Second Affiliated hospital of Xi'an Jiaotong University, Xi'an Jiaotong University Xi'an Shaanxi 710061 P.R. China
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Gong X, Zhao C, Wang Y, Luo Y, Zhang C. Antifreezing, Ionically Conductive, Transparent, and Antidrying Carboxymethyl Chitosan Self-Healing Hydrogels as Multifunctional Sensors. ACS Biomater Sci Eng 2022; 8:3633-3643. [PMID: 35876253 DOI: 10.1021/acsbiomaterials.2c00496] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Through a simple strategy of immersion in a mixed solution of water/ethylene glycol (EG)/lithium chloride (LiCl), self-healing carboxymethyl chitosan (CA) hydrogels, that is, CA/N-vinylpyrrolidone-EG-Li+ hydrogels (CEH) with an ultra-low-temperature freezing resistance below -70 °C were fabricated. The introduction of electrolyte ions and small-molecule polyol also made these hydrogels highly conductive (0.8 S m-1) and imparted antidrying property to them, showing stable and reversible sensitivity to finger-wrist bending as well as 150 cycles of stretching. Such hydrogels also presented highly efficient self-healing ability, with a stress-strain healing efficiency of over 90%. Furthermore, the CEH-based sensors maintained a stable sensing performance over a wide range of temperatures below the freezing point (from -10 to -70 °C) and exhibited stable sensitivity to temperatures with fast response and no significant hysteresis. The present work is expected to provide a simple and sustainable route for the preparation of multifunctional antifreezing conductive hydrogels based on CA, leading to a wide range of potential applications in soft sensor devices.
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Affiliation(s)
- Xinhu Gong
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, 483 Wushan Road, Guangzhou 510642, China
| | - Caimei Zhao
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, 483 Wushan Road, Guangzhou 510642, China
| | - Yang Wang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, 483 Wushan Road, Guangzhou 510642, China
| | - Ying Luo
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, 483 Wushan Road, 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, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, 483 Wushan Road, Guangzhou 510642, China
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4
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Ye Z, Lu H, Jia E, Chen J, Fu L. Organic solvents enhance polyvinyl alcohol/polyethylene glycol self‐healing hydrogels for artificial cartilage. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zishuo Ye
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an China
| | - Hailin Lu
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an China
| | - Endong Jia
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an China
| | - Jian Chen
- Group of Mechanical and Biomedical Engineering College of Mechanical and Electronic Engineering, Xi'an Polytechnic University Xi'an China
| | - Lifeng Fu
- Department of Orthopadics Shaoxing China
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Diao Q, Liu H, Yang Y. A Highly Mechanical, Conductive, and Cryophylactic Double Network Hydrogel for Flexible and Low-Temperature Tolerant Strain Sensors. Gels 2022; 8:gels8070424. [PMID: 35877509 PMCID: PMC9322378 DOI: 10.3390/gels8070424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/03/2022] [Accepted: 07/05/2022] [Indexed: 02/04/2023] Open
Abstract
Due to their stretchability, conductivity, and good biocompatibility, hydrogels have been recognized as potential materials for flexible sensors. However, it is still challenging for hydrogels to meet the conductivity, mechanical strength, and freeze-resistant requirements in practice. In this study, a chitosan-poly (acrylic acid-co-acrylamide) double network (DN) hydrogel was prepared by immersing the chitosan-poly (acrylic acid-co-acrylamide) composite hydrogel into Fe2(SO4)3 solution. Due to the formation of an energy-dissipative chitosan physical network, the DN hydrogel possessed excellent tensile and compression properties. Moreover, the incorporation of the inorganic salt endowed the DN hydrogel with excellent conductivity and freeze-resistance. The strain sensor prepared using this DN hydrogel displayed remarkable sensitivity and reliability in detecting stretching and bending deformations. In addition, this DN hydrogel sensor also worked well at a lower temperature (−20 °C). The highly mechanical, conductive, and freeze-resistant DN hydrogel revealed a promising application in the field of wearable devices.
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Affiliation(s)
- Quan Diao
- College of Materials & Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
- Correspondence: (Q.D.); (Y.Y.)
| | - Hongyan Liu
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;
| | - Yanyu Yang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;
- Correspondence: (Q.D.); (Y.Y.)
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Wang Y, Zhou Z, Li S, Zheng H, Lu J, Wang S, Zhang J, Wang K, Lin K. Near-Infrared-Light-Assisted Self-Healing Graphene-Thermopolyurethane Composite Films. Polymers (Basel) 2022; 14:polym14061183. [PMID: 35335522 PMCID: PMC8948706 DOI: 10.3390/polym14061183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/08/2022] [Accepted: 03/10/2022] [Indexed: 12/17/2022] Open
Abstract
Graphene-thermopolyurethane (G-TPU) composite films were fabricated and the effects of the TPU initial concentration, characteristics of TPU, and graphene loading on the electrical, mechanical, thermal, infrared thermal response and near-infrared-light-assisted self-healing properties of the composite films were investigated in detail. The experimental results demonstrate that the comprehensive performances of the composite film are related to the initial concentration of the TPU solution and the characteristics of the TPU and the graphene loading. The composite film prepared from TPU solution with low initial concentration can have conductivity under the condition of low graphene content. However, the composite film prepared with appropriate initial concentration of TPU solution and high graphene loading is conducive to obtain high conductivity. After 60 s of near-infrared illumination, the temperature of the composite film first increases and then decreases with the increase in graphene loading until it reaches saturation. The near-infrared light thermal response of the composite film with high graphene loading is related to the initial concentration of TPU solution, while the near-IR thermal response of the composite film with low graphene loading is independent of the initial concentration of TPU. The surface micro-cracks of the composite film almost disappeared after 10 min of near-infrared illumination. The resistance of the conductive composite film increases after healed. The composite film prepared with low melting point TPU is more favorable to obtain high near-IR thermal self-healing efficiency.
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