P(BA-b-AM)的反向原子转移自由基乳液聚合与结构表征  

Synthesis and property of amphiphilic block copolymer P(BA-b-AM)

作　　者：蒋学[1,2] 王银豪[1,2] 田秀枝 黄丹[1,2] 王树根 

机构地区：[1]江南大学纺织服装学院轻化工程系 [2]江南大学生态纺织教育部重点实验室,无锡214122

出　　处：《化工新型材料》2011年第6期71-73,77,共4页New Chemical Materials

基　　金：中央高校基本科研业务费专项资金资助(项目编号:JUSRP10902)

摘　　要：丙烯酸丁酯是丙烯酸酯共聚物中提供成膜性与粘附性能的主要结构单元。采用活性/可控自由基聚合,将丙烯酰胺与之共聚形成AB型两嵌段共聚物,将有利于改善丙烯酸酯聚合物在水性体系中的分散性能和在天然纤维等物质表面的粘附性能。以过硫酸钾/溴化铜/五甲基二乙烯三胺为引发-催化体系,在乳液中引发丙烯酸丁酯(BA)、丙烯酰胺(AM)依次进行反向原子转移自由基聚合(RATRP),得到P(BA-b-AM)乳液。采用红外光谱1、H-NMR,GPC表征共聚物结构和分子量及其分布。探讨了催化剂/配体比例、碱性盐对聚合物分子量分布的调控作用。The butyl acrylate is an important structure unit in acrylate copolymer for its good film-formation and adhesion ability.The dispersion ability in water and the adhesion property on natural polymer fiber of acrylate polymer can be improved by introducing hydrophilic monomer such as acryl amide into acrylate polymer as AB block copolymer by way of living/controlled radical polymerization.Potassium persulfate/Copper bromide/N,N,N＇,N＇,N＇＇-pentamethyldiethylenetriamine（PMDETA） was adopted to catalyze the reversal atom transfer radical polymerization（RATRP） of butyl acrylate and acryl amide in turn in emulsion.FT-IR and 1H-NMR were used to character the chemical structure of the copolymer.The influence of basic salt and proportion of catalyst/coordinator on the molecular weight distribution of the block copolymer was discussed.

关 键 词：丙烯酸丁酯 丙烯酰胺 反向原子转移自由基乳液聚合 双亲嵌段共聚物 

分 类 号：O631.5[理学—高分子化学]