| 温度/pH敏感性Semi-IPN水凝胶的制备与性能 |
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| 引用本文： | 杨礼贺,施冬健,东为富,倪忠斌,陈明清.温度/pH敏感性Semi-IPN水凝胶的制备与性能[J].高分子材料科学与工程,2011(12):131-134. |
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| 作者姓名： | 杨礼贺 施冬健 东为富 倪忠斌 陈明清 |
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| 作者单位： | 江南大学化学与材料工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(20876070);江苏省高等学校优秀科技创新团队(苏教科[2007]5号)资助 |
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| 摘 要： | 以N-乙烯基乙酰胺（NVA）、醋酸乙烯酯（VAc）和甲基丙烯酸-N,N′-二甲氨基乙酯（DMAEMA）为原料,通过自由基聚合制备了PDMAEMA/P（NVA-co-VAc）半互穿网络（Sem-iIPN）水凝胶。实验结果表明,该水凝胶具有较好的温度敏感性、pH敏感性、溶胀-退胀可逆性。随着温度的逐渐升高,凝胶的溶胀率随之...
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| 关 键 词： | 半互穿网络水凝胶 温敏性 pH敏感性 |
Preparation and Properties of Temperature and pH-Sensitive Semi-IPN Hydrogels |
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| Lihe Yang,Dongjian Shi,Weifu Dong,Zhongbin Ni,Mingqing Chen.Preparation and Properties of Temperature and pH-Sensitive Semi-IPN Hydrogels[J].Polymer Materials Science & Engineering,2011(12):131-134. |
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| Authors: | Lihe Yang Dongjian Shi Weifu Dong Zhongbin Ni Mingqing Chen |
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| Affiliation: | (School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | A novel temperature and pH-sensitive poly(2-(N,N′-dimethylamino)ethyl methacrylate)/ poly(N-vinylacetamide-co-vinylacetate)(PDMAEMA/P(NVA-co-VAc)) semi-IPN hydrogel was synthesized through incorporating PDMAEMA into cross-linked P(NVA-co-VAc) hydrogel by free radical solution polymerization in water at 30 ℃.The obtained results show that the semi-IPN hydrogels have temperature and pH double sensitivities.It is found that the Semi-IPN hydrogels show good swelling-shrinking reversibility under 10 ℃ and 60 ℃.Also,the semi-IPN hydrogels similar show good swelling-shrinking reversibility under pH=1.0 and pH=7.4. The swelling ratio of the semi-IPN hydrogels decreases according as raising temperature.The hydrogels swell in acidic medium and shrink in alkaline medium.Meanwhile,the hydrogels have some salt-sensitive due to the introduction of PDMAEMA chains. |
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| Keywords: | semi-IPN hydrogel temperature-sensitive pH-sensitive |
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