苯乙烯-N-苯基马来酰亚胺-马来酸酐三元共聚物的合成与性能  

Synthesis and Properties of Styrene-N-phenylmaleimide-maleic Anhydride Tercopolymer

作　　者：胡益民[1] 董建廷[1] 范仲勇[1] 孙猛[1] 

机构地区：[1]复旦大学材料科学系,上海200433

出　　处：《高等学校化学学报》2009年第12期2496-2501,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20474013);上海市重点学科建设项目(批准号:B113)资助

摘　　要：以过氧化对苯二甲酸二叔丁酯为引发剂,以一次投料方式,采用溶液聚合法合成了苯乙烯-N-苯基马来酰亚胺-马来酸酐三元共聚物.通过控制单体配比,实现产物中N-苯基马来酰亚胺质量分数在48%～63%之间可调.采用FTIR,1HNMR,13CNMR和GPC技术对三元共聚物的化学组成、链序列结构和分子量进行了测试.利用FOX方程计算的共聚物NPMI含量与1HNMR核磁测试结果一致.DSC和TGA测试的结果表明,当N-苯基马来酰亚胺质量分数>48%时,共聚物的玻璃化转变温度(Tg)从202℃提高到215℃,5%热失重温度高于363℃,所以三元聚合物是一种优异的聚合物耐热剂.Styrene-N-phenylmaleimide-maleic anhydride copolymers were synthesized by means of one-shot process with ditertbutyl peroxyphthalate as an initiator. The composition of N-phenylma leimide in copolymers is modified from 48% to 63% in the mass fraction by various monomer molar ratio. The structures and characteristic of the terpolymers were charactered via FTIR, 1H NMR, 13C NMR, GPC, DSC and TGA, respectively. The mass fraction of the N-phenylmaleimide in terpolymers calculated from FOX equation was in agreement with the 1H NMR results. DSC results show that the glass transition temperature of terpolymers increases from 202 ℃ to 215 ℃ with various compositions of chain segments. TGA results prove that the thermal decomposition temperature of samples at 5% mass loss with the N-phenylmaleimide in terpolymers more than 48% was higher than 363 ℃. Therefore, the Styrene-N-phenylmaleimide-maleic anhydride tercopolymer applies as an excellent heat-resistant agent to polymer materials.

关 键 词：N-苯基马来酰亚胺 苯乙烯 马来酸酐 溶液聚合 三元共聚 

分 类 号：O631[理学—高分子化学]