水相沉淀与溶液聚合法合成丙烯腈共聚物的对比  

Comparative Study of Acrylonitrile Copolymer Prepared by Aqueous Deposited and Solution Polymerization

作　　者：林农[1] 张爱丽[1] 罗东[1] 李文刚[1] 

机构地区：[1]东华大学材料学院,纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维》2009年第9期25-28,共4页Synthetic Fiber in China

摘　　要：分别采用水相沉淀聚合法和溶液聚合法合成丙烯腈共聚物,通过傅里叶变换红外光谱(FT-IR)、核磁测试(13C-NMR)对共聚物的结构进行了分析与表征,并采用差示扫描量热法(DSC)对比了两种聚合方法所得到的共聚物的热性能。结果表明:溶液聚合中参与共聚的衣康酸(IA)的份数要稍多于水相沉淀聚合;水相沉淀聚合得到的共聚物的全同立构体的含量(28.61%)稍高于溶液聚合得到的(21.15%);溶液聚合得到的共聚物在200～300℃之间的放热峰比水相沉淀聚合得到的共聚物的放热峰宽,且放热峰的峰值温度较水相沉淀聚合的低。Polyacrylonitrile （PAN） was prepared by aqueous deposited and solution poiymenzanon, The structures and thermal properties of eopolymer were characterized and compared by IR,^13C-NMR,DSC respectively. It had been found that compared to the solution polymerization, the eopolymer that was prepared in water medium had lower itaconic acid content, higher isotacticity （28.61%）and more narrow exothermal peak in the range of temperature（200-300 ℃）, higher peak temperature showed by DSC.

关 键 词：水相沉淀聚合 溶液聚合 丙烯腈共聚物 

分 类 号：TQ316.33[化学工程—高聚物工业]