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现代化工  2021, Vol. 41 Issue (S1): 218-221    DOI: 10.16606/j.cnki.issn0253-4320.2021.S.044
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
可逆强韧聚乙烯醇基水凝胶的制备与性能研究
董闯, 金子大作, 施冬健, 陈明清
江南大学化学与材料工程学院, 江苏 无锡 214122
Preparation and properties of reversible tough polyvinyl alcohol-based hydrogel
DONG Chuang, KANEKO Daisaku, SHI Dong-jian, CHEN Ming-qing
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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摘要 针对聚乙烯醇水凝胶制备复杂及综合性能不佳等问题,以天然香草酸和聚乙烯醇为原料,利用简单的一步混合法制备了强韧、高耗散的可逆水凝胶。通过FT-IR、XRD、DSC、旋转流变仪和SEM对所得水凝胶的形貌结构及性能进行表征。结果表明,制得的水凝胶具有较高的结晶度,能够发生可逆的溶胶-凝胶转变。相对于冻融法制备的水凝胶,其最大应力以及断裂伸长率分别从0.52 MPa、395%提升到1.31 MPa、600%,其能量耗散高达3.8 MJ/m3、耗散系数为85%,且拥有独特的可塑性。
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董闯
金子大作
施冬健
陈明清
关键词:  氢键键合  香草酸  聚乙烯醇  强韧水凝胶  高能量耗散    
Abstract: To simply the preparation and enhance the properties of polyvinyl alcohol-based hydrogel, a reversible hydrogel that is tough and has high energy dissipation is prepared through one step method with natural vanillic acid and polyvinyl alcohol aqueous solution as raw materials.The morphology and structure of the hydrogel are characterized by means of FT-IR, XRD, DSCy, rotational rheometer and SEM.It is found that the prepared hydrogel possesses high crystallinity and exhibits reversible sol-gel transition.Compared with the hydrogel made by freeze-thaw method, the maximum stress and elongation-at-break of the prepared hydrogel increases from 0.52 MPa and 395% to 1.31 MPa and 600%, respectively.Its energy dissipation reaches as high as 3.8 MJ·m-3, and the dissipation factor is 85%.More importantly, the obtained hydrogel shows unique plasticity.
Key words:  hydrogen bonding    vanillic acid    polyvinyl alcohol    tough hydrogel    high energy dissipation
收稿日期:  2021-02-05      修回日期:  2021-04-14           出版日期:  2021-10-30
ZTFLH:  TB34  
基金资助: 2020年江苏省研究生实践创新计划项目(SJCX20_0748)
通讯作者:  陈明清(1962-),男,博士,教授,研究方向为高分子材料的合成,通讯联系人,mqchen@jiangnan.edu.cn。    E-mail:  mqchen@jiangnan.edu.cn
作者简介:  董闯(1994-),男,硕士生,主要从事高分子水凝胶材料的研究,1392825980@qq.com
引用本文:    
董闯, 金子大作, 施冬健, 陈明清. 可逆强韧聚乙烯醇基水凝胶的制备与性能研究[J]. 现代化工, 2021, 41(S1): 218-221.
DONG Chuang, KANEKO Daisaku, SHI Dong-jian, CHEN Ming-qing. Preparation and properties of reversible tough polyvinyl alcohol-based hydrogel. Modern Chemical Industry, 2021, 41(S1): 218-221.
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https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2021.S.044  或          https://www.xdhg.com.cn/CN/Y2021/V41/IS1/218
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