%0 Journal Article
%T ELIMINATION OF GELATINIZATION USING MIXTURE OF SOLVENTS IN THE ATRP REACTION TO SYNTHESIZE MULTI ARM STAR POLYMERS<br>利用混合溶剂消除ATRP反应制备多臂星形聚合物的凝胶现象
%A ZHANG Jun
%A LI Huayi
%A ZHANG Liaoyun
%A HU Youliang
%A <br>张君
%A 李化毅
%A 张辽云
%A 胡友良
%J 高分子学报
%D 2010
%I 
%X Hyperbranched polystyrene synthesized by the copolymerization of styrene and p-chloromethyl styrene was used as initiator to initiate the ATRP reactions of styrene and methyl methacrylate with CuCl/ pentamethyldiethylenetriamine as catalysts.The reaction dynamics were studied.It was found that the ATRP the reaction gelatinized easily in good solvent chlorobenzene.The monomer conversions before gelation were small.If poor solvent 1,4-dioxane was added in chlorobenzene before gelation,the gelatinization reactions could be eliminated efficiently.The monomer conversions could reach to high values and muti-arm star polymers with high molecular weight about a million were synthesized.This is new method to prepare multi-arm star polymers with high molecular weight.
%K 多臂星形聚合物
%K 原子转移自由基聚合
%K 超支化聚苯乙烯
%K 反应动力学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=9212F94A640772B5FF2AA3498B815297&yid=140ECF96957D60B2&iid=DF92D298D3FF1E6E&sid=AB8B0EE7E1A96CB2&eid=27A5865B8C0B85C3&journal_id=1000-3304&journal_name=高分子学报&referenced_num=0&reference_num=16