Thermosetting Maleimide/Isobutene Alternating Copolymer as a New Class of Transparent Materials
Thermosetting Maleimide/Isobutene Alternating Copolymer as a New Class of Transparent Materials
复制标题
DOI：
10.1002/macp.200900541
复制
发表时间：
2010-04
影响因子：
2.5
通讯作者：
K. Takeda;A. Matsumoto
中科院分区：
文献类型：
--
作者：
K. Takeda;A. Matsumoto
采用自由基共聚法合成了N-烯丙基马来酰亚胺(AMI)和异丁烯(IB)交替共聚物[聚(AMI-ALT-IB)]作为一类新型热固性聚合物。根据由N-甲基马来酰亚胺(MMI)、N-烯丙基邻苯二甲酰亚胺(AP)和异丁烯丙基组成的三元共聚体系的结果，评价了AM I单体中马来酰亚胺基团的反应活性是N-烯丙基基团的103倍。在AMI与IB共聚的过程中，马来酰亚胺部分独占地参与了聚合反应，形成了可溶的聚合物(AMI-ALT-IB)。该共聚物由主链上的马来酰亚胺和IB单元和侧链上未反应的烯丙基组成的交替重复结构。聚(AMI-ALT-IB)在氮气中的起始分解温度超过400℃。聚(AMI-ALT-IB)透明流延膜在加热时很容易固化，不需要任何催化剂。
We synthesized an alternating copolymer of N-allylmaleimide (AMI) and isobutene (IB) [poly(AMI-alt-IB)] as a new class of thermosetting polymers by the free radical copolymerization process. The reactivity of the maleimide group of the AMI monomer was evaluated to be 10 3 times higher than that of the N-allyl group based on the results for the ternary copolymerization system composed of N-methylmaleimide (MMI), N-allylphthalimide (AP), and IB. The maleimide moiety exclusively participated in the propagation during the copolymerization of AMI with IB, resulting in the formation of the soluble poly(AMI-alt-IB). The copolymer included an alternating repeating structure consisting of maleimide and IB units in the main chain and the unreacted allyl group in the side chain. The onset temperature of the decomposition for poly(AMI-alt-IB) was over 400°C in a nitrogen stream. The transparent cast film of poly(AMI-alt-IB) was readily cured upon heating without any catalyst.