文献类型：期刊文献

中文题名：苯乙烯－甲基丙烯酸共聚物的合成、结构与性能研究

英文题名：Study on Synthesis,Structure and Properties of Poly(styrene-co-methacrylic acid)

作者：王耀先[1];赵玉庭[1]

机构：[1]华东理工大学高分子材料系

年份：1995

卷号：21

期号：6

起止页码：702

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：1998014016521);Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：共聚物;悬浮聚合;苯乙烯;甲基丙烯酸;共聚物

外文关键词：copolymer;suspension polymerization; reactivity ratios;poly (styrene-co-methacrylic acid)

摘要：采用悬浮聚合法合成了苯乙烯－甲基丙烯酸共聚物（ＳＭＡＡ），得率为９２％左右。由Ｋｅｌｅｎ－Ｔｕｄｏｓ法求得苯乙烯（Ｓｔ）与甲基丙烯酸（ＭＡＡ）在８０℃进行共聚反应的竞聚率为γ＿（Ｓｔ）＝０．３０５，γ＿（ＭＡＡ）＝０．６００。通过正交试验，确定了最佳配方。经ＦＴ－ＩＲ、ＤＳＣ、元素分析、化学滴定、ＧＰＣ等表征，证实了所合成的产物为透明的苯乙烯－甲基丙烯酸无规共聚物。研究表明，ＳＭＡＡ的耐热性比ＰＳ好得多，其玻璃化温度随共聚物中ＭＡＡ含量增加而增大，活化能为１６６．３ｋＪ／ｍｏｌ。共聚物的加工性能良好，力学性能比ＰＳ有了明显提高。
Poly(styrene-co-methaeylic acid)(SMAA )is simply copolymerized by a sta-ble and economic suspension method with yield about 92%. The reactivity ratios,which was measured by Kelen-Tudos method ,between styrene and methacrylic acid in the copolymeriza-tion at 80℃,ate :r_(St)=0. 305,r_(MAA)=0. 600.The best recipe is determined by orthorhombic ex-periment.By means of FT-IR, DSC ,element analysis,chemical titration,GPC etc.,it is proved that the product is a transparent random copolymer.It is shown that SMAA has a much better heat-resistance than PS,the active energy is 166. 3 kJ/mol. The copolymer has a good processibility,it′S mechanical properties are also abviously better than pure PS.