苯乙烯-烯丙醇共聚物的合成及表征  

Synthesis and Characterization of Poly( styrene-co-ally alcohol)

作　　者：李伟明[1] 杜杨[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《塑料工业》2015年第12期13-17,共5页China Plastics Industry

摘　　要：分别以30%过氧化氢(30%H_2O_2)、过氧化苯甲酰(BPO)和过氧化二异丙苯(DCP)为引发剂,苯乙烯(St)和烯丙醇(AA)为共聚单体,对苯乙烯与烯丙醇的自由基共聚合反应进行了研究。讨论了聚合条件(如引发剂种类与用量、反应温度、单体配比、加料方式等)对聚合物组成的影响。在此基础上,合成了一种苯乙烯-烯丙醇共聚物(P(St-co-AA),简称PSAA)。利用核磁共振氢谱、傅里叶变换红外光谱、热重分析、差示扫描量热法和元素分析等对该聚合物进行了表征和组成分析。结果表明,选用高温引发剂DCP,在烯丙醇过量下,通过逐步递减的方式加入绝大部分的苯乙烯和引发剂,可得到相对均一的共聚物。通过调整单体比,可得到不同羟值的共聚物。The free radical copolymerization of styrene （St） and allyl alcohol （AA） was studied with hydrogen peroxide, dicumyl peroxide and benzoyl peroxide as initiators and St and AA as monomers. The effects of polymerization conditions to the polymer composition were investigated, which included the type and usage of the initiators, reaction temperature, monomers ratio and feeding mode. On the basis, the copolymer of styrene and allyl alcohol （P （St-co-AA）, short for PSAA ） was synthesized. The characterizatioia and composition of the copolymer were analyzed by proton nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, differnetial scanning calorimetry and elemental analysis. The results indicate that, with the high temperature initiator of dicumyl peroxide, excess allyl alcohol, and gradual addition of most styrene and initiators, the relatively uniform copolymer is obtained. Copolymers with different hydroxyl numbers can be obtained by adjusting monomer ratio.

关 键 词：本体聚合 苯乙烯 烯丙醇 高温引发剂 羟值 

分 类 号：TQ317[化学工程—高聚物工业]