乳化剂对核壳含氟苯丙乳胶粒形貌及涂膜润湿性的影响  

Effect of Emulsifiers on Morphology and Film Wettability of Core-Shell Fluorine-Containing Poly-Styrene-Acrylate Latex

作　　者：徐桂龙[1] 邓丽丽[1] 文秀芳[1] 皮丕辉[1] 郑大锋[1] 程江[1] 杨卓如[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2011年第1期7-11,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省科技计划项目(2009B011000010);华南理工大学中央高校基本科研业务费资助项目(2009ZM0288)

摘　　要：采用预乳化半连续种子乳液聚合方法,选用3种乳化剂体系(SDS/OP-10,DNS-86,DNS-86与含氟乳化剂复配)制备含氟苯丙乳液,研究其对合成核壳含氟苯丙乳液的乳胶粒形貌和乳液涂膜疏水疏油性的影响.利用透射电镜、红外光谱、X射线光电子能谱和水/油接触角测试对所制备乳液的乳胶粒形貌、化学组成、涂膜表面元素信息和疏水疏油性进行表征.结果表明:采用SDS/OP-10乳化体系制备得到的乳液乳胶粒呈雪人型结构,而选用DNS-86乳化剂体系、DNS-86与含氟乳化剂复配的乳化剂体系制备得到的乳液的乳胶粒呈规整的核壳结构;具规整核壳结构乳胶粒的乳液有利于乳液涂膜表面氟元素的富集,在乳胶粒形貌和乳化剂体系的共同作用下,DNS-86和含氟乳化剂复配的乳化剂体系具有最好的疏水疏油性.Fluorine-containing poly-styrene-acrylate latex was prepared by means of pre-emulsifying semi-conti-nuous seed emulsion polymerization in three different emulsifier systems such as SDS/OP-10,NDS-86 and DNS-86/fluorine-containing emulsifier.Then,the effects of the emulsifiers on the morphology of the latex particles and the hydrophobic/oleophilic properties of the latex film were investigated.Moreover,the morphology of latex particles,the chemical composition,the elements on the film surface and the hydrophobic/oleophilic properties of the film were characterized respectively by means of TEM,FT-IR,XPS and water/oil contact angle test.The results show that the latex particles prepared in SDS/OP-10 emulsifier system display a snowman structure,while those prepared in DNS-86 or DNS-86/fluorine-containing emulsifier system display an uniform core-shell structure,which benefits the enrichment of fluorine on the film surface,and that the film of the latex prepared in DNS-86/fluorine-containing emulsifier system possesses the best hydrophobic and oleophobic properties due to the morphology of latex particles and the adopted emulsifiers.

关 键 词：乳化剂 含氟乳液 乳胶粒 形貌 核壳结构 

分 类 号：TQ316.6[化学工程—高聚物工业]