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以线型氯甲基化聚苯乙烯（ＰＳ－ＣＨ２Ｃｌ）为大分子引发剂，引发丙烯酸丁酯原子转移自由基聚合，合成了聚苯乙烯－丙烯酸丁酯接枝共聚物［Ｐ（Ｓ－ｇ－ＢＡ）］。ＰＳ－ＣＨ２Ｃｌ是由ＰＳ通过氯甲基化反应合成，ＰＳ链上－ＰｈＣＨ２Ｃｌ的分布是统计均匀。建立了该接枝共聚物的纯化方法，纯化后接枝共聚物的接枝效率可达９６．５％。用ＧＰＣ跟踪了大分子引发剂在本体中的引发和接枝反应过程。研究结果表明，反应速率对单体浓度呈一级动力学特征，接枝共聚物的相对分子质量随单体转化率线性增加，分子量分布变窄，聚合反应显示出可控特征。
Using linear chloromethylated polystyrene (PS-CH2Cl) as the macroinitiator, initiated the atomic transfer radical polymerization of butyl acrylate, and synthesized polystyrene-butyl acrylate graft copolymer [P (S-g -BA)]. PS-CH2Cl is synthesized by chloromethylation of PS and the distribution of -PhCH2Cl on the PS chain is statistically uniform. The purification method of the graft copolymer was established. The graft copolymer could be grafted to 96.5% after purification. The initiation and grafting reaction of macromolecular initiator in the bulk was followed by GPC. The results show that the reaction rate of the monomer concentration showed a first-order kinetic characteristics of the graft copolymer relative molecular mass linearly increased with the monomer conversion, molecular weight distribution narrowing, the polymerization showed controllable characteristics.