| 含氟丙烯酸酯嵌段共聚物乳液的合成及表征 |
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| 引用本文： | 孙仁生,王世杰,张雯,任小亮,崔月芝,李天铎. 含氟丙烯酸酯嵌段共聚物乳液的合成及表征[J]. 材料导报, 2009, 23(16) |
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| 作者姓名： | 孙仁生 王世杰 张雯 任小亮 崔月芝 李天铎 |
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| 作者单位： | 1. 山东轻工业学院化学工程学院,济南,250353
2. 山东轻工业学院轻化与环境学院,济南,250353 |
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| 基金项目： | 国家自然科学基金，山东省中青年科学家科研奖励基金 |
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| 摘 要： | 以PEDB(二硫代苯甲酸苯乙基酯)为链转移剂,进行AA(丙烯酸)、BA(丙烯酸丁酯)可逆加成-断裂链转移(RAFT)自由基聚合,得到数均相对分子质量可控、相对分子质量分布窄的聚合物P(AA-BA).以得到的聚合物为大分子RAFT自由基聚合剂,进行舍氟丙烯酸酯的扩链反应,制得稳定的含氟嵌段共聚物P(AA-BA)-b-PTFEA(甲基丙烯酸三氟乙酯)乳液.为了克服RAFT链转移剂在水中迁移慢的缺点,引入了自发相倒置的实验过程,即先进行AA、BA的本体聚合,然后在温和搅拌条件下滴加NaOH溶液,体系发生自发相倒置,产生稳定的亚微型聚合物颗粒,DLS测量乳液颗粒平均大小为4nm.乳液经TEM、DLS观测,粒径为50～60nm,颗粒分布均匀.
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| 关 键 词： | 含氟嵌段共聚物 RAFT乳液聚合 自发相倒置 |
Preparation and Characterization of Fluorinated Acrylic Block Copolymers Latex |
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| SUN Rensheng,WANG Shijie,ZHANG Wen,REN Xiaoliang,CUI Yuezhi,LI Tianduo. Preparation and Characterization of Fluorinated Acrylic Block Copolymers Latex[J]. Materials Review, 2009, 23(16) |
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| Authors: | SUN Rensheng WANG Shijie ZHANG Wen REN Xiaoliang CUI Yuezhi LI Tianduo |
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| Affiliation: | SUN Rensheng1,WANG Shijie1,ZHANG Wen1,REN Xiaoliang1,CUI Yuezhi1,LI Ti,uo2(1 School of Chemical Engineering,Sh,ong Institute of Light Industry,Jinan 250353,2 School of Light Chemistry ,Environment Engineering,Sh,ong Institate of Light Industry,Jinan 250353) |
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| Abstract: | Poly(acrylic acid-co-butyl methacrylate) with controlled molecular weight and narrow molecular weight distribution is obtained by reversible addition-fragmentation polymerization of acrylic acid and butyl methacrylate in the presence of 1-phenylethyl dithiobenzoate(PEDB) as a reversible addition-fragmentation chain transfer(RAFT) agent.Then,using the final dispersion as seed for further chain extension by TFEA,very stable latex with fluorinated block copolymer is recovered.To overcome the slow diffusion of ... |
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| Keywords: | fluorinated block copolymer RAFT emulsion polymerization spontaneous phase inversion |
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