中国塑料 ›› 2011, Vol. 25 ›› Issue (12): 26-30 .DOI: 10.19491/j.issn.1001-9278.2011.12.007

• 材料与性能 • 上一篇    下一篇

MMA-BA自由基共聚物的结构及性能

罗通 王志东 徐若愚 龚方红   

  1. 常州大学材料学院 常州大学 材料科学与工程学院 常州大学
  • 收稿日期:2011-08-30 修回日期:2011-10-08 出版日期:2011-12-26 发布日期:2011-12-26

Structure and Properties of MMA-BA Free Radical Copolymer

Tong LUO Zhidong WANG Ruoyu XU Fanghong GONG   

  • Received:2011-08-30 Revised:2011-10-08 Online:2011-12-26 Published:2011-12-26
  • Contact: Fanghong GONG

摘要: 采用本体聚合法制备了甲基丙烯酸甲酯(MMA)/丙烯酸丁酯(BA)无规共聚物,考察了引发剂、单体配比对聚合物材料力学、光学及其他性能的影响。借助氢谱核磁共振、动态力学分析、扫描电子显微镜对共聚物的结构和性能进行了表征分析。结果表明,随着BA含量的增加,共聚物的损耗模量降低,链段的内摩擦阻力减小,链段运动能力加强;当MMA/BA质量比为75/25时,材料的冲击强度提高了43 %,同时透光率保持在92 %以上。

关键词: 聚甲基丙烯酸甲酯, 丙烯酸丁酯, 自由基共聚, 力学性能, 结构

Abstract: In this paper, random copolymer of methyl methacrylate and butyl acrylate was prepared via bulk polymerization. The influences of concentration of initiator, monomer ratio on the mechanical, optical, and other properties were investigated. The structure and properties of copolymers were characterized using 1H-NMR, DMA, and SEM. With the increasing content of butyl acrylate, the loss modulus decreased. When the content of butyl acrylate was 25 %, the impact strength increased by 43 %, while light transmission remained at 92 %.

Key words: methyl methacrylate, butyl acrylate, free radical copolymer, mechianical property, structure