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首页> 外文期刊>Journal of Macromolecular Science, Part A: Pure and Applied Chemistry >Synthesis of Surface-Functionalized Poly(styrene-co-butadiene) Nanoparticles via Controlled/Living Radical Mini-emulsion Copolymerization Stabilized by Ammonolyzed Poly(styrene-alt-maleic anhydride) (SMA) RAFT Agent
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Synthesis of Surface-Functionalized Poly(styrene-co-butadiene) Nanoparticles via Controlled/Living Radical Mini-emulsion Copolymerization Stabilized by Ammonolyzed Poly(styrene-alt-maleic anhydride) (SMA) RAFT Agent

机译：通过氨化聚苯乙烯-马来酸酐（SMA）RAFT剂稳定/控制的自由基微乳液共聚合成表面功能化聚苯乙烯-丁二烯纳米粒子

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摘要

A process for reversible addition-fragmentation chain transfer (RAFT) radical polymerization in a mini-emulsion system stabilized by ammnolyzed poly(styrene-alt- maleic anhydride) copolymer (SMA) as an amphiphilic macro RAFT agent has been applied to the copolymerization of styrene and butadiene to prepare nanoparticles. First, for the RAFT polymerization of styrene, the results of molecular weights (Mns) and polydispersity index (PDIs) determined by GPC showed that the RAFT mini-emulsion polymerization of styrene exhibited good controlled/living nature with a lower degree of aminolysis (30%). Second, for the copolymerization of styrene and butadiene, before the gel point the molecular weight growth was followed during the polymerization by GPC and the results revealed that the GPC curve moves to the higher molecular weight indicating the formation of the copolymer. At low conversion, molecular weights (Mns) are in good agreement with theoretical prediction. The microphase separation of the copolymer nanoparticles was confirmed by transmission electron microscopy (TEM).View full textDownload full textKeywordsMini-emulsion, reversible addition fragmentation chain transfer (RAFT), gel permeation chromatography (GPC), TEM (Transmission Electron Microscopy), styrene/butadiene copolymerRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10601325.2012.630946
机译：在以两亲性大分子RAFT剂为氨解聚（苯乙烯-马来酸酐）共聚物（SMA）稳定的微乳液体系中，可逆加成-断裂链转移（RAFT）自由基聚合的方法已应用于苯乙烯的共聚和丁二烯制备纳米粒子。首先，对于苯乙烯的RAFT聚合，通过GPC测定的分子量（Mns）和多分散指数（PDI）的结果表明，苯乙烯的RAFT小乳液聚合表现出良好的控制/活性，而氨解度较低（30 ％）。第二，对于苯乙烯和丁二烯的共聚，在凝胶点之前，通过GPC在聚合过程中跟踪分子量的增长，结果表明，GPC曲线移至较高的分子量，表明形成了共聚物。在低转化率下，分子量（Mns）与理论预测吻合良好。共聚物纳米颗粒的微相分离通过透射电子显微镜（TEM）确认。查看全文下载全文关键词微乳液，可逆加成断裂链转移（RAFT），凝胶渗透色谱（GPC），TEM（透射电子显微镜），苯乙烯/丁二烯共聚物相关var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，servicescompact：“ citeulike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，发布：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/10601325.2012.630946

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