聚[2-(4-苯基偶氮苯氧基)乙基丙烯酸酯]的合成及光响应性能研究  

Synthesis and photoresponsive behavior of poly[2-( 4-phenylazophenoxy)ethyl acrylate]

作　　者：冯乙[1] 陈小霞[1] 李光华[1] 战大川[1] 

机构地区：[1]广西大学化学化工学院广西石化资源加工及过程强化技术重点实验室,广西南宁530004

出　　处：《化学研究与应用》2015年第6期852-857,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21064001);广西自然科学基金项目(2014GXNSFAA118042)

摘　　要：从4-羟基偶氮苯出发,依次与2-氯乙醇、丙烯酰氯反应,合成了2-(4-苯基偶氮苯氧基)乙基丙烯酸酯(PAPEA)。接着以PAPEA为单体,二硫代苯甲酸异丁腈酯(CPDB)为链转移剂,偶氮二异丁腈(AIBN)为引发剂,利用可逆加成-断裂链转移(RAFT)聚合法合成了聚[2-(4-苯基偶氮苯氧基)乙基丙烯酸酯](PPAPEA)均聚物,同时考察了反应时间、引发剂和链转移剂浓度等因素对聚合反应的影响。利用FT-IR、1H-NMR和GPC等对单体和聚合物的结构进行了表征,并利用UV对聚合物的光响应性能进行了测试。结果表明,PAPEA的聚合反应动力学曲线呈良好的线性关系,分子量分布较窄(小于1.3);均聚物在紫外光照下的异构化速率随分子量的增大而减缓,而其在自然光下的回复速率变化不大。2-（4-Phenylazophenoxy） ethyl acrylate（PAPEA） was synthesized by the consecutive reaction of 4-hydroxyazobenzene with 2-chloroethanol and acryloyl chloride.Poly[2-（4-Phenylazophenoxy） ethyl acrylate]（PPAPEA） was prepared via the RAFT polymerization of PAPEA,using 2-cyanoprop-2-yl dithiobenzoate（CPDB） as a chain transfer agent and 2,2＇-azobisisobutyronitrile（AIBN） as initiator.The effects of reaction time,the concentration of initiator and chain transfer agent on the polymerization of PAPEA were investigated.The resulting PAPEA and PPAPEA were characterized by FT-IR,1H-NMR,and GPC.And,the photoresponsive behavior of PPAPEA was determined by UV.The results showed that the kinetic curve of the polymerization of PAPEA reveals good linear relationship,and the molecular weight distributions were narrower（ 〈1.3）.The rate of isomerization became slow with increasing molecular weight of PPAPEA under ultraviolet irradiation,and the recovery of photo-induced PPAPEA was a little change under natural light.

关 键 词：2-( 4-苯基偶氮苯氧基) 乙基丙烯酸酯 CPDB RAFT 聚合 光响应性 

分 类 号：O631.2[理学—高分子化学]