环糊精作用下核壳型含氟丙烯酸酯乳液的合成及表征  

Synthesis and characterization of fluorine-containing acrylate emulsion with core-shell structure in the presence of cyclodextrin

作　　者：陈鑫涛[1] 王罗新[1] 蔡静平[1] 易长海[1] 邹汉涛[1] 甘厚磊[1] 

机构地区：[1]武汉纺织大学材料科学与工程学院,湖北武汉430073

出　　处：《印染助剂》2012年第1期19-22,共4页Textile Auxiliaries

基　　金：武汉市科技攻关计划项目(200910321101)

摘　　要：在β-环糊精(β-CD)的作用下,以甲基丙烯酸甲酯(MMA)、丙烯酸正丁酯(BA)为主要单体,甲基丙烯酸十二氟庚酯(DFHMA)为含氟单体,采用预乳化半连续种子乳液聚合法合成了核-壳结构含氟丙烯酸酯共聚物乳液.通过FTIR、TEM、XPS、PSD、CA等手段分别对共聚乳液的结构与组成、粒径大小及粒度分布、乳胶膜对水的接触角进行了表征,并探讨了β-CD对单体转化率的影响.结果表明:DFHMA有效参与了共聚反应,所得含氟乳液具有核壳结构,单分散性良好,微球粒径处于纳米级,且粒径随着β-CD用量的增加而增加,而粒度分布随β-CD用量的增加先减小后增加,单体转化率随着β-CD用量的增加先上升后下降.另外,经含氟共聚乳液处理后的棉织物具有较好的疏水性能,接触角可达139°.A novel core-shell structure fluorine-containing acrylic polymer was prepared by pre-emulsion and semi-continuous seed emulsion polymerization in the presence of β-cyclodextrin （β-CD） using methyl methylacrylate （MMA） and butylacrylate （BA） as main monomers, dodecafluoroheptyl methacrylate （DFHMA） as fluo- rine-containing monomer. Structure and composition of co-polymer emulsion, the particle size and distribution as well as contact angle to water was characterized by FTIR, TEM, XPS, PSD and CA measurements. The effect of β-CD on monomer conversation was also investigated. The results showed that DFHMA effectively involved in the copolymerization, the obtained emulsion had core-shell structure and good monodispersity, microsphere size was in the nanometer. And particle size increased with the increase of β-CD amount, but particle size distribution decreased firstly and then increased. Conversation increased then decreased with the increase of β-CD amount. In addition, the cotton fabric treated with fluorine-containing copolymer latex exhibited good hydrophobility and contact angle was up to 139°.

关 键 词：Β-环糊精 含氟丙烯酸酯乳液聚合 核-壳结构 表征 

分 类 号：TQ433.436[化学工程]