A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance
Design and preparation of gels with excellent mechanical properties has garnered wide interest at present. In this paper, preparation of polyvinyl alcohol (PVA)–tannic acid (TA) gels with exceptional properties is documented. The crystallization zone and hydrogen bonding acted as physical crosslinka...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/8/11/751 |
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| author | Chunqing Si Xintong Tian Yan Wang Zhigang Wang Xinfang Wang Dongjun Lv Aili Wang Fang Wang Longlong Geng Jing Zhao Ruofei Hu Qingzeng Zhu |
| author_facet | Chunqing Si Xintong Tian Yan Wang Zhigang Wang Xinfang Wang Dongjun Lv Aili Wang Fang Wang Longlong Geng Jing Zhao Ruofei Hu Qingzeng Zhu |
| author_sort | Chunqing Si |
| collection | DOAJ |
| description | Design and preparation of gels with excellent mechanical properties has garnered wide interest at present. In this paper, preparation of polyvinyl alcohol (PVA)–tannic acid (TA) gels with exceptional properties is documented. The crystallization zone and hydrogen bonding acted as physical crosslinkages fabricated by a combination of freeze–thaw treatment and a tannic acid compound. The effect of tannic acid on mechanical properties of prepared PVA–TA gels was investigated and analyzed. When the mass fraction of PVA was 20.0 wt% and soaking time was 12 h in tannic acid aqueous solution, tensile strength and the elongation at break of PVA–TA gel reached 5.97 MPa and 1450%, respectively. This PVA–TA gel was far superior to a pure 20.0 wt% PVA hydrogel treated only with the freeze–thaw process, as well as most previously reported PVA–TA gels. The toughness of a PVA–TA gel is about 14 times that of a pure PVA gel. In addition, transparent PVA–TA gels can effectively prevent ultraviolet-light-induced degradation. This study provides a novel strategy and reference for design and preparation of high-performance gels that are promising for practical application. |
| first_indexed | 2024-03-09T18:19:23Z |
| format | Article |
| id | doaj.art-27ca266b0a064425b35f33341d79db15 |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-09T18:19:23Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-27ca266b0a064425b35f33341d79db152023-11-24T08:26:05ZengMDPI AGGels2310-28612022-11-0181175110.3390/gels8110751A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet ResistanceChunqing Si0Xintong Tian1Yan Wang2Zhigang Wang3Xinfang Wang4Dongjun Lv5Aili Wang6Fang Wang7Longlong Geng8Jing Zhao9Ruofei Hu10Qingzeng Zhu11College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaCollege of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, ChinaSchool of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, ChinaDesign and preparation of gels with excellent mechanical properties has garnered wide interest at present. In this paper, preparation of polyvinyl alcohol (PVA)–tannic acid (TA) gels with exceptional properties is documented. The crystallization zone and hydrogen bonding acted as physical crosslinkages fabricated by a combination of freeze–thaw treatment and a tannic acid compound. The effect of tannic acid on mechanical properties of prepared PVA–TA gels was investigated and analyzed. When the mass fraction of PVA was 20.0 wt% and soaking time was 12 h in tannic acid aqueous solution, tensile strength and the elongation at break of PVA–TA gel reached 5.97 MPa and 1450%, respectively. This PVA–TA gel was far superior to a pure 20.0 wt% PVA hydrogel treated only with the freeze–thaw process, as well as most previously reported PVA–TA gels. The toughness of a PVA–TA gel is about 14 times that of a pure PVA gel. In addition, transparent PVA–TA gels can effectively prevent ultraviolet-light-induced degradation. This study provides a novel strategy and reference for design and preparation of high-performance gels that are promising for practical application.https://www.mdpi.com/2310-2861/8/11/751gelmechanical propertiesstressstrainUV-vis spectroscopy |
| spellingShingle | Chunqing Si Xintong Tian Yan Wang Zhigang Wang Xinfang Wang Dongjun Lv Aili Wang Fang Wang Longlong Geng Jing Zhao Ruofei Hu Qingzeng Zhu A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance Gels gel mechanical properties stress strain UV-vis spectroscopy |
| title | A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance |
| title_full | A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance |
| title_fullStr | A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance |
| title_full_unstemmed | A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance |
| title_short | A Polyvinyl Alcohol–Tannic Acid Gel with Exceptional Mechanical Properties and Ultraviolet Resistance |
| title_sort | polyvinyl alcohol tannic acid gel with exceptional mechanical properties and ultraviolet resistance |
| topic | gel mechanical properties stress strain UV-vis spectroscopy |
| url | https://www.mdpi.com/2310-2861/8/11/751 |
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