摘要
可见光下,以α-溴苄基乙酸乙酯为引发剂,采用ATRP法合成了高分子量聚丙烯腈(PAN,Mn,GPC/2.5=8.6×104g·mol-1,Mw/Mn=1.24),转化率95%;以Ir(ppy)3为催化剂,PAN-Br为大分子引发剂,与丙烯酸丁酯(BA)聚合,合成了PAN-b-PBA嵌段共聚物,其结构经1H NMR和GPC确证。研究了Ir(ppy)3催化聚合体系的动力学行为。结果表明:该体系的聚合行为具有典型的"活性"特征。
Polyacrylonitrile( PAN) with high conversion( 95%) and high molecular weight( Mn,GPC/2. 5 = 8. 6 × 104 g·mol-1,Mw/Mn= 1. 24) was synthesized by visible light induced atom transfer radical polymerization,using α-bromophenylacetate as initiator. PAN-b-PBA block copolymer was obtained by the polymerization of macroinitiator PAN-Br with butyl acrylate,using Ir( ppy)3 as catalyst.The structure were confirmed by1 H NMR and GPC. The dynamic behavior of Ir( ppy)3 was investigated. The result showed that the polymerization exihibited classic "living"characteristic.
出处
《合成化学》
CAS
CSCD
北大核心
2018年第2期119-122,共4页
Chinese Journal of Synthetic Chemistry
基金
江苏省自然科学基金资助项目(BK20160164)
关键词
光聚合
ATRP法
聚丙烯腈
合成
嵌段共聚物
photopolymerization
ATRP methoed
polyacrylonitrile
synthesis
block copolymer
