有机氟改性苯丙乳液的合成及其性能  

Synthesis and Properties of Polystyrene-acrylate Emulsion Modified by Organic Fluorine

作　　者：高献英[1] 李中华[1] 田秋平[1] 侯艳青[1] 龙光斗[1] 

机构地区：[1]华中师范大学化学学院,武汉430079

出　　处：《应用化学》2009年第1期108-111,共4页Chinese Journal of Applied Chemistry

摘　　要：以壬基酚聚氧乙烯醚/十二烷基硫酸钠/非离子含氟乳化剂DF-10为复合乳化剂体系,采用半连续滴加工艺合成了有机氟改性苯丙乳液。通过红外光谱和透射电子显微镜分别对共聚物进行了结构表征和形态观察,研究了乳液稳定性和单体转化率的影响因素以及含氟甲基丙烯酸酯、氟碳表面活性剂用量对乳液综合性能的影响。确定最佳配方为含氟丙烯酸酯单体的质量分数为0.67%,DF-10的质量分数为1.35%。研究结果表明,当聚合温度为75～80℃,反应时间为4.5～5 h时,单体转化率达99.6%。乳液稳定性能好,吸水率最低可达6%。An organic fluorine modified polystyrene-acrylate emulsion was synthesized by a semi-continuous process with fatty alcohol poly （oxyethylene ether ） /sodium dodecyl sulfate/Non-ionic fluorine containing surfactant（OP-10/SDS/DF-lO） as an emulsifier system. The structure and latex particles of the copolymers were characterized by IR and TEM. The influence factors including the content of fluorine-containing methyl acrylate and fluorocarbon surfactants on the emulsion were investigated. The effects of the factors on the rate of monomer conversion and the stability of the emulsion were also studied. It was shown that the rate of monomer conversion was 99.6% when the polymerization temperature was 75 N 80 ℃ and the reaction time was 4.5 5 h when the mass fraction of organic fluorine was only 0. 67% and that of DF-10 was 1.35%.

关 键 词：苯丙乳液 含氟甲基丙烯酸酯 氟碳表面活性剂 单体转化率 吸水率 

分 类 号：O632.1[理学—高分子化学]