HEA-AN共聚物的合成与表征  

Synthesis and characterization of the HEA-AN copolymer

作　　者：白晓慧[1] 张教强[1] 康拴艳 李科[1] 张立[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710129

出　　处：《粘接》2014年第1期40-44,共5页Adhesion

摘　　要：以丙烯酸羟乙酯(HEA)、丙烯腈(AN)为单体,偶氮二异丁腈(AIBN)为引发剂,β-巯基乙醇(β-ME)为链转移剂在甲醇溶剂中通过自由基聚合,制备了HEA-AN共聚物。用红外光谱(FT-1 1IR)、H核磁共振(H-NMR)以及热重分析(TG)对聚合物的结构进行了分析表征。通过控制变量的方法研究了反应温度、时间、引发剂用量、链转移剂用量等对聚合反应中的黏均分子质量、转化率的影响;对比分析了一次投料和连续投料2种方法合成的共聚物的羟值,发现连续投料法合成的聚合物在反应过程中羟值变化很小,合成的聚合物结构组成均匀性更好。Using acrylonitrile （AN） and 2-hydroxyethyl acrylate （HEA） as the raw materials,azobisisbutyronitrile （AIBN） as the initiator, β -mercaptoethanol （ β -ME） as the chain transfer agent,the HEA - AN copolymer was synthesized by free radical copolymerization in methyl alcohol as the solvent. The copolymer was analyzed and characterized by FT- IR,^1HNMR and TG. The influences of reactions conditions including reaction temperature,reaction time,amount of initiator and concentration of chain transfer agent on the Mη and the conversion rate were studied by the control variables method.Two synthesis methods,one-time feeding and continuous feeding of raw materials,were contrastively investigated by hydroxyl value analysis of polymers,it was concluded that the hydroxyl value of polymer synthesized by continuous feeding method changed slowly,so the composition uniformity of polymer synthesized by this method is better.

关 键 词：自由基聚合 HEA-AN共聚物 羟值 

分 类 号：TQ433.43[化学工程]