| 相转变温度范围窄的聚(N-异丙基丙烯酰胺)温敏性微凝胶 |
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| 引用本文： | 顾婷,查刘生.相转变温度范围窄的聚(N-异丙基丙烯酰胺)温敏性微凝胶[J].功能高分子学报,2007,19(3):286-291. |
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| 作者姓名： | 顾婷 查刘生 |
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| 作者单位： | 1. 东华大学纤维材料改性国家重点实验室,上海,201620
2. 东华大学纤维材料改性国家重点实验室,上海,201620;东华大学分析测试中心,上海,201620 |
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| 基金项目： | 国家自然科学基金
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教育部科学技术基金 |
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| 摘 要： | 采用间歇式、半间歇式和连续式无皂乳液聚合(SFEP)法合成温敏性聚(N-异丙基丙烯酰胺)(PNIPAM)微凝胶。连续式或半间歇式SFEP法合成的PNIPAM微凝胶相转变温度范围明显地比间歇式SFEP法合成的窄,其中又以连续式SFEP法的效果最明显。相同交联剂用量的情况下,连续式SFEP法合成的PNIPAM微凝胶的粒径和溶胀比最大,而间歇式SFEP法合成的最小。通过研究微凝胶合成过程中溶胀比随反应时间的变化关系,证明了连续式或半间歇式SFEP法合成的PNIPAM微凝胶具有比较均匀的内部交联结构。
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| 关 键 词： | 温敏性 微凝胶 聚(N-异丙基丙烯酰胺) 相转变温度 无皂乳液聚合工艺 |
| 文章编号： | 1008-9357（2007）03-0286-06 |
| 收稿时间： | 2006-11-23 |
Poly(N-isopropylacrylamide) Temperature-Sensitive Microgels with Narrow Phase Transition Temperature Range |
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| GU Ting,ZHA Liu-sheng.Poly(N-isopropylacrylamide) Temperature-Sensitive Microgels with Narrow Phase Transition Temperature Range[J].Journal of Functional Polymers,2007,19(3):286-291. |
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| Authors: | GU Ting ZHA Liu-sheng |
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| Institution: | 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China 2. Research Center for Analysis and Measurement, Donghua University, Shanghai 201620, China |
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| Abstract: | Temperature-sensitive poly(N-isopropylacrylamide)(PNIPAM) microgels are synthesized by batch,semi-batch or continuous surfactant-free emulsion polymerization(SFEP).The continuous or semi-batch PNIPAM microgels have narrower phase transition temperature range than batch PNIPAM microgels,among which continuous PNIPAM microgels have the narrowest one.With the same amount crosslinkor,the continuous PNIPAM microgels have the greatest particle size and swelling ratio,while the batch PNIPAM microgels have the smallest ones. The PNIPAM microgels prepared by continuous or semi-batch SFEP have more homogeneous internal crosslinking structure than the ones prepared by batch process,which is confirmed by the measurement of their swelling ratios against reaction time. |
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| Keywords: | temperature-sensitivity microgel poly(N-isopropylacrylamide) phase transition temperature surfactant-free emulsion polymerization process |
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