溶剂热法制备无皂P(St-MMA)纳米胶乳粒子  

Preparation of Emulsifer-free P(St-MMA) Copolymer Nanoparticle Latex by Solvothermal Method

作　　者：董泓[1] 吴华强[1] 王谦宜[1] 徐红艳[1] 徐冬梅[1] 

机构地区：[1]安徽师范大学化学与材料科学学院,安徽芜湖241000

出　　处：《合成化学》2007年第3期330-333,共4页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(20271002);安徽省教育厅自然科学基金资助项目(2003kj140)

摘　　要：采用溶剂热法,在密闭容器内,以异丙醇-水为分散介质,过硫酸钾为引发剂引发苯乙烯(St)和甲基丙烯酸甲酯(MMA)共聚,制得了粒径约为60 nm的无皂聚(苯乙烯-甲基丙烯酸甲酯)纳米胶乳粒子[P(St-MMA)]。探讨了异丙醇用量和反应温度对P(St-MMA)粒径的影响,并对异丙醇-水和丙酮-水体系中的聚合速率进行了比较。实验结果表明:随着异丙醇用量的增加,P(St-MMA)粒径逐渐减小;随着反应温度的升高,P(St-MMA)粒径先减小后增大;异丙醇-水体系的聚合速率比丙酮-水体系的聚合速率快。Emulsifier-free poly （ styrene-methylmethacrylate ） copolymer nanoparticle latex [ P （ St- MMA） ] about 60 nm of average particle diameters were synthesized in isopropylalcohol-water medium using potassium persulfate（KPS） as a initiator by solvothermal mothod. The effects of amount of isopropylalcohol and reaction temperature on the average particle size of P（St-MMA） were investigated. The polymerization rate in isopropylalcohol-water were compared with that in acetone-water. The results indicated that the average particle size of P（St-MMA） decreased with the amount of isopropylalcohol increasing, and decreased first but then increased with the increase of reaction temperature. The polymerization rate in isopropylalcohol-water is faster than that in acetone-water.

关 键 词：溶剂热法 异丙醇 无皂乳液聚合 纳米胶乳粒子 聚(苯乙烯-甲基丙烯酸甲酯) 

分 类 号：O631.5[理学—高分子化学]