Polymerization in Magnetic Field. XX. Thermal Behavior of the Copolymersof Styrene with 2, 3 Epoxypropyl Methacrylate Synthesized in theMagnetic Field Presence

The Open Macromolecules Journal Pub Date : 2009-09-11 DOI:10.2174/1874343900903010027

L. Nita, A. Chiriac, S. Cimmino, C. Silvestre, D. Duraccio, C. Vasile

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引用次数: 1

Abstract

The thermal behavior of polystyrene (PS) and of styrene copolymers with 2, 3 epoxypropyl methacrylate (GMA) synthesized in the presence of the magnetic field has been studied. The thermal behavior was investigated by thermogravimetry (TGA) and differential scanning calorimetry (DSC) techniques. The synthesized polymeric latexes were also characterized from the view point of the particle size distribution (70-200 nm) as well as of their stability by de- termining the zeta potential values. The decrease of zeta potential absolute value with the increase of GMA content or growth of the temperature it was observed. At the same time, the increase of zeta potential absolute value corresponds to latexes prepared in the MF presence. The presence of the magnetic field during syntheses increases the swelling capaci- ties, glass transition temperature and thermal stability of both homopolymers as well as of the synthesized copolymers. The behavior was attributed to a potential ordered structure induced by the magnetic field during syntheses upon macro- molecular chains.

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磁场聚合。XX。苯乙烯与2,3环氧丙基甲基丙烯酸酯共聚物在磁场作用下的热行为

研究了在磁场作用下合成的聚苯乙烯(PS)及其与2,3环氧甲基丙烯酸丙酯(GMA)共聚物的热行为。采用热重法(TGA)和差示扫描量热法(DSC)研究了其热行为。从粒径分布(70 ~ 200 nm)和zeta电位值的测定对合成的聚合物乳液进行了表征。zeta电位绝对值随GMA含量的增加或温度的升高而减小。同时，zeta电位绝对值的增加对应于在MF存在下制备的乳胶。合成过程中磁场的存在提高了均聚物和合成共聚物的溶胀能力、玻璃化转变温度和热稳定性。这种行为归因于在大分子链合成过程中磁场诱导的潜在有序结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Open Macromolecules Journal

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