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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of ethylene and butyl methacrylate-based copolymer by emulsion polymerization
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Synthesis of ethylene and butyl methacrylate-based copolymer by emulsion polymerization

机译：乳液聚合的合成乙烯和丁基丙烯酸丁酯的共聚物

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The emulsion copolymerization of ethylene with butyl methacrylate (BMA) was carried out in an aqueous medium at 60 degrees C under moderate reaction conditions. The polymer system is well controlled with a linear increase in the molecular weight (M-n) versus ethylene feed pressure and narrow molecular weight distributions (>1.36) were observed throughout the copolymerization reaction. The spectroscopic analyses confirm the presence of acrylate functional as well as methylene group in the synthesized poly(ethylene-co-BMA) copolymer. Morphological behavior of poly(ethylene-co-BMA) has been studied using SEM and TEM analyses. Thermal stability of the copolymers was investigated by thermogravimetric analysis and it was observed that the copolymer is stable up to 380 degrees C. X-ray diffraction analysis confirmed the amorphous behavior of poly(ethylene-co-BMA). Dynamic light scattering measurement confirms the formation of poly(ethylene-co-BMA) nanoparticles. The particle size of copolymer nanoparticles were in the range of 85-108 nm with low polydispersity indexes (>0.2). The viscous and the elastic property of the copolymer were investigated and established that at high temperature elastic behavior predominant over viscous effect. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47994.
机译：在中等反应条件下，在60℃下在水性介质中在含水介质中进行乙烯与甲基丙烯酸丁酯（Bma）的乳液共聚。聚合物体系在整个共聚反应中观察到分子量（M-N）的线性增加，在分子量（M-N）相对于乙烯进料压力和窄分子量分布（> 1.36）。光谱分析证实了合成的聚（乙烯-CA-BMA）共聚物中丙烯酸酯官能的存在以及亚甲基。使用SEM和TEM分析研究了聚（乙烯-CA-BMA）的形态学行为。通过热重分析研究共聚物的热稳定性，并且观察到共聚物稳定至380℃。X射线衍射分析证实了聚（乙烯-CA-BMA）的无定形行为。动态光散射测量证实聚（乙烯-CA-BMA）纳米颗粒的形成。共聚物纳米颗粒的粒径为85-108nm，具有低多分散指数（> 0.2）。研究共聚物的粘性和弹性性质并确定在高温弹性行为中主要粘稠效果。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47994。

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