| 亲水/疏水半互穿网络凝胶对温度的响应 |
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| 引用本文： | 张建合. 亲水/疏水半互穿网络凝胶对温度的响应[J]. 物理化学学报, 2003, 19(1): 90-93. DOI: 10.3866/PKU.WHXB20030121 |
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| 作者姓名： | 张建合 |
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| 作者单位： | Department of Chemistry and Chemical Engineering, Xinyang Teachers College, Xinyang 464000 |
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| 基金项目： | 国家自然科学基金(29574160)，河南省教委科研规划(97150017)资助项目~ |
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| 摘 要： | 研究了一种亲水/疏水型半互穿网水凝胶（PAAc/QPVPD gels）对温度的刺激响应.在弱酸性或弱碱性（pH=7.5）溶液中,该凝胶的溶胀比在低温区（< 28 ℃）随温度的升高微微增大,约在28 ℃出现最大值,然后随温度升高而迅速减小,温度约为32.5 ℃时溶胀比趋于最低值.这主要是由于聚丙烯酸网络(PAAc)中氢键的解离与疏水改性聚电解质N-正十二烷基聚（4-乙烯吡啶）溴化盐(QPVPD)的疏水相互作用共同引起的.
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| 关 键 词： | 水凝胶 半互穿网络 温度响应 溶胀 |
| 收稿时间： | 2002-05-15 |
| 修稿时间： | 2002-05-15 |
Stimuli-response of Hydrophilic-hydrophobic Semi-IPN Hydrogels on Temperature |
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| Zhang Jian He. Stimuli-response of Hydrophilic-hydrophobic Semi-IPN Hydrogels on Temperature[J]. Acta Physico-Chimica Sinica, 2003, 19(1): 90-93. DOI: 10.3866/PKU.WHXB20030121 |
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| Authors: | Zhang Jian He |
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| Affiliation: | Department of Chemistry and Chemical Engineering, Xinyang Teachers College, Xinyang 464000 |
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| Abstract: | The Stimuli-response of hydrophilic-hydrophobic semi-IPN hydrogels consisting of polyacrylic acid (PAAc)/ poly(N-dodecyl-4-vinyl pyridinium bromide) (QPVPD) with temperature was investigated in weak alkaline and acid solution .Swelling ratio (SR) of the gels increases slowly with the increasing of temperature initially, and reaches a maximum at 28 ℃,then decreases rapidly, and reaches a minimum at 32.5 ℃.This phenomenon is mainly explained by the dissociation of hydrogen bonding in PAAc network and hydrophobic interaction of QPVPD. |
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| Keywords: | Hydrogel Semi IPN Temperature response Swelling |
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