| 物理/化学复合交联水凝胶的结构形态和温敏性 |
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| 引用本文： | 张青松,赵义平,张龙柏,李洪春,陈莉.物理/化学复合交联水凝胶的结构形态和温敏性[J].高分子材料科学与工程,2010(9). |
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| 作者姓名： | 张青松 赵义平 张龙柏 李洪春 陈莉 |
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| 作者单位： | 天津工业大学天津市改性与功能纤维重点实验室;材料科学工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(20774064); 教育部科学技术研究重点项目(209005) |
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| 摘 要： | 以等质量的物理交联剂锂皂石(hectorite)和化学交联剂亚甲基双丙烯酰胺(MBA)共同作为交联剂制备了聚异丙基丙烯酰胺水凝胶。该复合交联剂改善了仅用MBA交联制备的水凝胶的脆性和透光性,储能模量(E′)约为单独使用亚甲基双丙烯酰胺(MBA)和hectorite制备的水凝胶的储能模量之和的一半,体积相转变温度(VPTT)仍在32℃左右,和单独使用MBA和hectorite制备的水凝胶的VPTT相一致,但内部形态和溶胀度更多地取决于化学交联剂MBA的使用。
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| 关 键 词： | 水凝胶 锂皂石 亚甲基双丙烯酰胺 异丙基丙烯酰胺 体积相转变温度 |
Structure,Morphology and Temperature-Sensitivity of Hydrogel Cross-Linked by Both Physical and Chemical Cross-Linker |
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| ZHANG Qing-song,ZHAO Yi-ping,ZHANG Long-bai,LI Hong-chun,CHEN Li.Structure,Morphology and Temperature-Sensitivity of Hydrogel Cross-Linked by Both Physical and Chemical Cross-Linker[J].Polymer Materials Science & Engineering,2010(9). |
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| Authors: | ZHANG Qing-song ZHAO Yi-ping ZHANG Long-bai LI Hong-chun CHEN Li |
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| Affiliation: | ZHANG Qing-song,ZHAO Yi-ping,ZHANG Long-bai,LI Hong-chun,CHEN Li(Tianjin Key Laboratory of Fiber Modification and Functional Fiber,School of Materials Science and Engineering,Tianjin Polytechnic University,Tianjin 300160,China) |
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| Abstract: | Physical cross-linker hectorite and chemical cross-linker N,N'-methylene-bis-acrylamide(MBA) with same mass were used together to prepare poly(N-isopropylacrylamide) hydrogel. The brittleness and poor transmittance of hydrogel simply using MBA as cross-linker were improved by multiple adoption of both hectorite and MBA. The storage modulus of hydrogel using both cross-linkers is half total storage modulus of hydrogels cross-linked by MBA and hectorite. In addition,the volume phase transition temperature(VPT... |
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| Keywords: | hydrogel hectorite N N'-methylene-bis-acrylamide N-isopropylacrylamide volume phase transition temperature |
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