Preparation and characterization of polysiloxane–polyacrylates composite lattices by two seeded emulsion polymerization and their film properties
Preparation and characterization of polysiloxane–polyacrylates composite lattices by two seeded emulsion polymerization and their film properties
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DOI：
10.1002/app.24843
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发表时间：
2007-02
影响因子：
3
通讯作者：
Mingxuan Zou;Qingchun Zhao;J. Nie;Zhicheng Zhang
中科院分区：
文献类型：
--
作者：
Mingxuan Zou;Qingchun Zhao;J. Nie;Zhicheng Zhang
【摘要】：以八甲基环四硅氧烷(D4)和四甲基四乙烯基环四硅氧烷(VD4)为原料,在可聚合聚硅氧烷种子胶乳存在下,进行γ射线诱导的甲基丙烯酸甲酯和丙烯酸丁酯种子乳液聚合反应。 十二烷基苯磺酸（DBSA）。第一次种子聚合后，添加3-甲基丙烯酰氧基丙基三甲氧基硅烷(MPS)进行第二次种子聚合。转化-时间曲线表明，聚硅氧烷种子胶乳大大加快了首次种子聚合速率。最终的复合晶格还表现出良好的储存稳定性、机械稳定性和高耐电解质能力。通过透射电子显微镜（TEM）发现复合乳胶颗粒的形貌是相当均匀的精细结构。通过傅里叶变换红外（FT-IR）光谱证实了聚丙烯酸酯在聚硅氧烷上的接枝和MPS的水解。还研究了乳胶膜的机械性能、吸水率、表面性能和透明度。 © 2006 Wiley periodicals, Inc. J Appl Polym Sci 103: 1406–1411, 2007
Gamma ray-induced seeded emulsion polymerization of methyl methacrylate and butyl acrylate was carried out in the presence of polymerizable polysiloxane seed latex, which was obtained by the ring-opening copolymerization of octamethyl cyclotetrasiloxane (D4) and tetramethyl tetravinyl cyclotetrasiloxane(VD4) catalyzed by dodecylbenzene sulfonic acid (DBSA). After the first seeded polymerization, 3-methacryloxylpropyltrimethoxylsilane (MPS) was added for the second seeded polymerization. The conversion–time curve showed that the first seeded polymerization rate was accelerated much by the polysiloxane seed latex. The final composite lattices also showed good storage stability, mechanical stability, and high electrolyte resistance ability. The morphology of the composite latex particles was found to be a quite uniform fine structure by transmission electron microscopy (TEM). The graft of polyacrylates onto polysiloxane and hydrolysis of MPS were confirmed by Fourier transform infrared (FT-IR) spectroscopy. The mechanical performance, water absorption ratio, surface properties, and transparency of the latex films were also investigated. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1406–1411, 2007