| 胶原-聚乙烯醇水凝胶溶胀特性的研究 |
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| 引用本文： | 刘婷,林海,但卫华.胶原-聚乙烯醇水凝胶溶胀特性的研究[J].中国皮革,2011(21). |
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| 作者姓名： | 刘婷 林海 但卫华 |
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| 作者单位： | 四川大学制革清洁技术国家工程实验室;四川大学轻纺与食品学院; |
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| 基金项目： | 成都市科技计划项目,项目编号:10GGYB345SW-023 |
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| 摘 要： | 采用经化学改性的含羧基的聚乙烯醇、胶原为原料,经物理交联,即反复冻融法制备了胶原-聚乙烯醇水凝胶。研究了不同原料配比的胶原-聚乙烯醇水凝胶的溶胀动力学、pH敏感性及pH溶胀-消胀特性,并利用数学方程拟合的方法计算其平衡溶胀比,尽量减少了因样品溶胀不足或测量误差导致平衡溶胀比估算的不准确性,使所得数据更加科学准确。结果显示:制备的胶原-聚乙烯醇水凝胶具有很快的溶胀速率,如胶原含量为9.09%的4号水凝胶可在100min内达到90%的平衡溶胀率,且随着胶原含量的增加,溶胀速率随之加快;电解质可降低其平衡溶胀比;有一定的pH敏感性和pH溶胀-消胀特性,胶原含量的增加可使水凝胶的pH溶胀-消胀特性更加显著。
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| 关 键 词： | 聚乙烯醇 胶原 水凝胶 溶胀 |
Swelling Behavior of Collagen-poly(vinyl alcohol) Hydrogel |
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| Liu Ting,Lin Hai,Dan Weihua.Swelling Behavior of Collagen-poly(vinyl alcohol) Hydrogel[J].China Leather,2011(21). |
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| Authors: | Liu Ting Lin Hai Dan Weihua |
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| Affiliation: | Liu Ting1,2,Lin Hai1,Dan Weihua1,2 (1 National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China,2.College of Light Industry,Textile and Food Engineering,China) |
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| Abstract: | Poly(vinyl alcohol) (PVA) with pendent carboxyl groups was attained through chemical modification. A series of hydrogels with different mass ratios of collagen and modified PVA were prepared by repeated freezing and thawing. The swelling dynamics, pH sensitivity and swelling behavior under different conditions were investigated through the swelling experiments. According to the swelling ratios (Q) of the hydrogels, the mathematical equation was employed to fit the swelling process and the swelling ratio at ... |
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| Keywords: | poly(vinyl alcohol) collagen hydrogel swelling |
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