摘要
以甲基丙烯酸三氟乙酯（Actyflon-G03）、丙烯酸丁酯（BA）、甲基丙烯酸甲酯（MMA）为原料，采用质量比为1／1的OP-10／SDS复合乳化剂，利用种子乳液聚合法，合成了核壳结构共聚物乳液。研究了温度对聚合反应、氟单体含量对聚合物膜吸水性及硬度的影响，采用DSC、SEM-EDX、TEM表征了共聚物膜的性能及乳胶粒子特征。结果表明：当Actyflon—G03含量为23．28％时，核壳型结构粒子呈球形分布，粒径约为80～110nm，膜吸水率最低，硬度最高，并有75．85％的最大转化率和0．58％的最低凝胶率。SEM-EDX分析显示，氟原子在成膜过程中向膜表面迁移，降低了膜的表面能。
Fluorine-containing copolymer latex with core-shell structure was prepared by seed emulsion polymerization. Butyl acrylate （BA）, methyl methacrylate （MMA） and methyl trifluorinacrylate （Actylion-G03） were served as monomers, in which Actyflon-G03 was mainly distributed in the core-shell section. The mixed emulsifier of sodium lauryl sulfate （SDS） and octyl-phenyl poly-oxyethylene （OP-10） was used in the mass ration of OP-10/SDS=1 ： 1. The effect of temperature on the reaction and the effect of Aetyflon-G03 content on water absorption and hardness of film were discussed separately. SEM-EDX, TEM as well as DSC were used to characterize the morphology structure, particle size and the properties of films. The analysis results indicate that when Actyflon-G03 content is controlled around 23 %, the particle morphology is spherical structure and the size is in 80-110 nm, the film performs the lowest water absorption, the highest hardness, the lowest gelatin rate （0.58%） and maximum conversion rate （75.85%）. SEM-EDX analysis reveals that fluorine element is mainly distributed on the film surface, and the surface energy of film is decreased.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2008年第1期25-29,共5页
Journal of Functional Polymers
基金
国家自然科学基金资助项目(20474050)
关键词
含氟聚合物
甲基丙烯酸三氟乙酯
核壳结构
乳液聚合
fluorinated polymer
methyl trifluorinacrylate
core-shell structure
emulsion polymerization
作者简介
和玲（1962-），女，陕西省西安市人，副教授，博士，主要研究方向：功能高分子材料。E-mail：heling@mail．xjtu．edu．cn
