交联聚苯乙烯-二乙烯基苯与丙烯腈的辐照接枝  

Irradiation grafting reaction of polystyrene-divinylbenze with acrylonitrile

作　　者：熊洁[1] 许云书[1] 黄玮[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《化学研究与应用》2006年第8期975-977,共3页Chemical Research and Application

摘　　要：聚苯乙烯系列的树脂颗粒有很强的耐辐照性，采用预辐照法所需剂量很大。苯环有共轭π结构，它的π电子是非定域的，辐射时苯基吸收的能量虽然足以使键断裂，但由于能量很快在整个分子重新分布，把能量集中于某一键使其断裂几率是很低的，所以采用预辐照接枝法所需的吸收剂量很大，相关的研究报道很少。本工作主要就共辐照和预辐照接枝聚合丙烯腈的方法进行了讨论。Polystyrene - divinylbenze - acrylonitrile （SDBAN）resin was synthesized byγ pre - irradiation grafting reaction and mutual radiation graftin reaction with acry lonitrile. Structure of the grafted polymer had been studied by FT - IR. The studies showed that the orientating grafting reaction could be used and also found that only in the higher absorption doso（600 - 2400kGy） the pre - irradiation grafting reaction was feasible; Both of the grafting rate of the two methods increasing with the increase of absorption dose. By comparison Pre - irradiation graftingreeaction was better.

关 键 词：共辐照接枝 预辐照接枝 聚苯乙烯-二乙烯基苯 丙烯腈 

分 类 号：O632.13[理学—高分子化学]