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%.
出处
《应用化学》
CAS
CSCD
北大核心
2009年第1期108-111,共4页
Chinese Journal of Applied Chemistry
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
polystyrene-acrylate emulsion, fluorine-containing methyl acrylate, fluorocarbon surfactant, rate of monomer conversion, rate of water absorption
