透明多孔聚合物凝胶的微乳液合成研究 |
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引用本文: | 高静,李晓,张卫英,刘振枫. 透明多孔聚合物凝胶的微乳液合成研究[J]. 石油化工, 2003, 32(7): 599-603 |
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作者姓名: | 高静 李晓 张卫英 刘振枫 |
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作者单位: | 福州大学,化学化工学院,福建,福州,350002 |
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基金项目: | 福建省自然科学基金资助项目(D0010004),福建省高等学校测试基金资助项目(JC200015)。 |
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摘 要: | 对甲基丙烯酸甲酯(MMA)-丙烯酸丁酯(BA)进行反相及双连续相微乳液共聚合,结果表明,以丙烯酸取代正戊醇作为助乳化剂可以得到透明的聚合物凝胶,其中水相质量分数为20%和40%的微乳液,稳定聚合所要求的丙烯酸/油相最小质量比分别为0 75和0 91。而且,研究发现KMnO4-H2C2O4是双连续微乳液聚合的高效引发体系,反相微乳液聚合则可采用偶氮二异丁睛(AIBN)等油溶性引发剂。ESEM的观测表明,反相微乳液聚合所得透明聚合物凝胶具有闭孔结构,双连续微乳液聚合则得到开孔结构的透明聚合物凝胶。
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关 键 词: | 微乳液聚合 助乳化剂 引发剂 透明多孔聚合物 甲基丙烯酸甲酯 丙烯酸丁酯 丙烯酸 |
文章编号: | 1000-8144(2003)07-0599-05 |
修稿时间: | 2003-01-16 |
Study on Preparation of Transparent Microporous Polymer Gels from Microemulsion Polymerization |
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Abstract: | Polymerization in inverse and bicontinuous microemulsions containing methyl methacrylate and butyl acrylate was studied.Transparent polymer gels could be obtained from microemulsion polymerization with acrylic acid as cosurfactant rather than n-pentanol.Minimum mass ratio of acrylic acid to acrylates required in initial microemulsions containing 20% and 40% aqueous phase were 075 and 091,respectively.KMnO4-H2C2O4 was efficient to initiate bicontinuous microemulsion polymerization and transparent porous polymer gels could be formed quite fast under proper conditions.Ordinary oil-soluble initiator such as AIBN(2,2-azo-bis-iso-butyrnitrile)could be adopted in inverse microemulsion polymerization.According to ESEM examination,polymer gels obtained from inverse microemulsion polymerization exhibited a close-cell microstructure,while those from bicontinuous microemulsion polymerization showed an open-cell microstructure. |
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Keywords: | microemulsion polymerization cosurfactant initiator transparent microporous polymer MMA BA AA |
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