Comparison of styrene reversible addition–fragmentation chain‐transfer polymerization in a miniemulsion system stabilized by ammonlysis poly(styrene‐alt‐maleic anhydride) and sodium dodecyl sulfate
Comparison of styrene reversible addition–fragmentation chain‐transfer polymerization in a miniemulsion system stabilized by ammonlysis poly(styrene‐alt‐maleic anhydride) and sodium dodecyl sulfate
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DOI：
10.1002/app.35405
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发表时间：
2012-06
影响因子：
3
通讯作者：
Yitao Yu;Qinghua Zhang;Xiao-li Zhan;Feng-qiu Chen
中科院分区：
文献类型：
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作者：
Yitao Yu;Qinghua Zhang;Xiao-li Zhan;Feng-qiu Chen
在本研究中，我们进行了可逆的加成-断裂链转移（RAFT）聚合的苯乙烯（St）在细乳液体系中由两种不同的稳定剂，氨解聚（苯乙烯-alt-马来酸酐）（SMA）和十二烷基硫酸钠（SDS），在相同的反应条件下稳定。主要目的是比较聚合动力学、活性特征、胶乳稳定性和粒子形态。在这两个系统中使用的宏观RAFT试剂是SMA，其通过由1-苯乙基苯二硫代乙酸酯介导的RAFT溶液聚合获得。实验结果表明，用SDS稳定的St RAFT细乳液聚合比用氨解SMA稳定的St RAFT细乳液聚合具有更好的活性。两种体系中所得乳液都很稳定，但不同稳定剂对乳液聚合动力学、活性及粒子形态有明显影响。用SDS稳定的RAFT细乳液聚合得到的粒子均为固体粒子，而用氨解SMA稳定的细乳液体系则具有明显的核壳结构。© 2011 Wiley Periodicals，Inc.应用聚合物科学杂志，2012年
In this study, we conducted the reversible addition–fragmentation chain-transfer (RAFT) polymerization of styrene (St) in a miniemulsion system stabilized by two different stabilizers, ammonlysis poly(styrene-alt-maleic anhydride) (SMA) and sodium dodecyl sulfate (SDS), with identical reaction conditions. The main objective was to compare the polymerization kinetics, living character, latex stability, and particle morphology. The macro-RAFT agent used in both systems was SMA, which was obtained by RAFT solution polymerization mediated by 1-phenylethyl phenyldithioacetate. The experimental results show that the St RAFT miniemulsion polymerization stabilized by SDS exhibited a better living character than that stabilized by ammonlysis SMA. The final latices were very stable in two systems, but different stabilizers had an obvious effect on the polymerization kinetics, living character, and particle morphology. All of the particles obtained by RAFT miniemulsion polymerization stabilized by SDS were solid, but an obvious core–shell structure was observed in the miniemulsion system stabilized by ammonlysis SMA. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012