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首页> 外文期刊>Journal of Applied Polymer Science >Miniemulsion polymerization of a fluorinated acrylate copolymer: Kinetic studies and nanolatex morphology characterization
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Miniemulsion polymerization of a fluorinated acrylate copolymer: Kinetic studies and nanolatex morphology characterization

机译：氟化丙烯酸酯共聚物的细乳液聚合：动力学研究和纳米胶乳的形态表征

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摘要

A stable fluoroacrylate copolymer emulsion was successfully prepared by miniemulsion polymerization with fluoroacrylate, lauryl methylacrylate, and methyl methacrylate as monomers. Extremely hydrophobic fluoroacrylate, instead of conventional cosurfactants, was used as a reactive cosurfactant to stabilize the miniemulsions. The results indicated that fluoroacrylate retarded Ostwald ripening and allowed the production of stable miniemulsions. The chemical compositions of the copolymer were studied with Fourier transform infrared and H-1-NMR. The average composition of the copolymers prepared with miniemulsions was in good agreement with the feed ratio according to H-1-NMR from the integration ratios corresponding to typical protons of the individual monomers. The particle size distribution and morphology of the latex particles were determined with laser particle analysis and transmission electron microscopy. The particle size of the latex underwent no change in the process of miniemulsion polymerization, but the particle size distributions were broader than those of conventional emulsion polymerization. The effects of various reaction parameters, including the temperature and concentrations of the emulsifier and initiator, on the miniemulsion polymerization were also investigated, and the polymerization rate and conversion increased with increasing concentrations of nonylphenol polyethoxylate (with an average of 40 ethylene oxide units per molecule), cetyltrimethylammonium, and 2,2'-azobisisobutyronitrile. (c) 2007 Wiley Periodicals, Inc.
机译：通过以氟丙烯酸酯，丙烯酸月桂酯甲基酯和甲基丙烯酸甲酯为单体的细乳液聚合成功地制备了稳定的氟丙烯酸酯共聚物乳液。使用极疏水的氟代丙烯酸酯代替常规的助表面活性剂，作为反应助表面活性剂来稳定细乳液。结果表明，氟代丙烯酸酯可延缓奥斯特瓦尔德（Ostwald）熟化，并能产生稳定的细乳液。用傅立叶变换红外光谱和H-1-NMR研究了共聚物的化学组成。由细乳液制备的共聚物的平均组成与对应于单个单体的典型质子的积分比与根据H-1-NMR的进料比非常吻合。用激光颗粒分析和透射电子显微镜确定胶乳颗粒的粒径分布和形态。细乳液聚合的过程中，胶乳的粒径没有变化，但是粒径分布比常规乳液聚合的粒径分布宽。还研究了包括乳化剂和引发剂的温度和浓度在内的各种反应参数对细乳液聚合的影响，并且随着壬基酚聚乙氧基化物浓度的增加（每分子平均有40个环氧乙烷单元），聚合速率和转化率也随之增加。 ），鲸蜡基三甲基铵和2,2'-偶氮二异丁腈。 （c）2007年Wiley Periodicals，Inc.

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