聚二乙烯苯的取代反应研究

STUDY ON ELECTROPHILIC AROMATIC SUBSTITUTION OF POLYDIVINYLBENZENE

以悬浮聚合法制得一系列高交联聚二乙烯苯树脂，通过改变反应试剂、催化剂、反应溶剂考察了聚二乙烯苯树脂进行亲电取代反应的规律．结果表明，聚二乙烯苯树脂可发生亲电取代反应，反应程度较低．聚（对－二乙烯苯）的反应程度高于聚（间－二乙烯苯）．

series of highly crosslinked polydivinylbenzene resins were synthesized by suspension polymerization in the presence of toluene and liquid pareffin as porogenic agent. The electrophilic aromatic substitutions of these polymers were studied by changing reaction agent, catalyst and solvent. The results showed that the percentage conversion of reaction of the polymers were lower than those of crosslinked polystyrene. In terms of reaction extents of both isomers poly (p-divinylben-zene) and poly (m-divinylbenzene), poly(m-DVB) is not so high as those of poly (p-DVB).