含氟丙烯酸酯三元共聚细乳液的微波辐射合成与表征  

Synthesis and Characterization of Fluorinated Acrylate Ternary Copolymer Latex Prepared by Miniemulsion Polymerization under Micromave Irradiation

作　　者：郭小丽[1] 熊圣东[1] 易昌凤[2,1] 徐祖顺[2,1] 

机构地区：[1]湖北大学材料科学与工程学院,武汉430062 [2]湖北大学有机功能分子与应用教育部重点实验室,武汉430062

出　　处：《应用化学》2009年第1期86-89,共4页Chinese Journal of Applied Chemistry

基　　金：湖北省杰出人才基金(2004ABB003);湖北省科技厅创新团队基金资助项目

摘　　要：采用微波辐射细乳液聚合的方法,合成了含氟丙烯酸酯(FA)-丙烯酸丁酯(BA)-甲基丙烯酸甲酯(MMA)的三元共聚细乳液。用重量法测定了转化率,考察了细乳液的稳定性及乳胶膜的吸水率,用接触角法表征了共聚物乳胶膜的表面性能。结果表明,使用微波辐射能加快反应速率,提高单体转化率,反应10 min后单体转化率达到80%;且微波辐射下制得的细乳液离心稳定性更好。当氟单体的质量分数为25%时,所制得含氟共聚物乳胶膜的吸水率降至1.43%,表面自由能降至14.85 mJ/m2。Stable fluoroacrylate copolymer P （FA-BA-MMA） was successfully synthesized by miniemulsion polymerization under microwave irradiation. Conversion of the monomers was determined by gravimetry. The water resistance of the latex films was investigated and the stability of the miniemulsion was observed. The surface properties of the copolymer films were investigated by contact angle measurement. The results show that the miniemulsion eopolymerization under microwave irradiation had higher reaction rate and higher conversion than traditional heating, and the centrifugal stability was better. The monomerconversion under microwave irradiation was 80% at 10 min. The water absorption ratio and surface free energy of the fluorinated acrylate films both decreased evidently compared with that of the acrylate copolymer films without fluorine. The water absorption ratio and the surface energy could reach 1.43% and 14. 85 mJ/m^2 respectively when the amount of FA used in the copolymerization was 25%.

关 键 词：微波辐射 含氟丙烯酸酯 细乳液聚合 表面自由能 

分 类 号：O631.5[理学—高分子化学]