4-乙烯基苄氯/苯乙烯细乳液制备及其稳定性  

Research on the Preparation and Stability of 4-Chloromethyl Styrene/Styrene Miniemulsion

作　　者：闫哲[1] 陈英[1] 陈东[1] 吕挺 王路辉[1] 王玉华[1] 

机构地区：[1]浙江海洋学院石化与能源工程学院,浙江舟山316000 [2]杭州电子科技大学材料与环境工程学院,浙江杭州310018

出　　处：《精细化工》2015年第10期1195-1200,共6页Fine Chemicals

基　　金：浙江省自然科学基金项目(LY12B06002);浙江海洋学院科研启动经费~~

摘　　要：以4-乙烯基苄氯(p-CMS)为模型单体,采用超声细乳化的方法制备了系列p-CMS/苯乙烯(St)细乳液。利用纳米粒度仪研究了乳化剂用量、超声时间、超声功率和助稳定剂等对细乳液制备及p-CMS/St质量比值对细乳液稳定性的影响。结果表明,在乳化剂用量为10 g/L、超声24 min、超声功率400 W、助稳定剂用量为单体质量的5%时,制得细乳液的液滴平均粒径约为99 nm,粒径多分散指数为0.12;细乳液的稳定性随着p-CMS/St质量比值的增大而下降,Ostwald熟化作用可能是p-CMS/St细乳液失稳的主要原因。A series of p-chloromethyl styrene（ p-CMS）/styrene（ St） miniemulsion was prepared by ultrasonication method. The effect of amount of emulsifier,ultrasonic time,ultrasonic power,and costabilizer content on the preparation of miniemulsion and the effect of p-CMS/St mass ratios on its stability were investigated. The results show that a miniemulsion with an average diameter of as low as99 nm and a polydispersity index of 0. 12 was obtained under the conditions that the concentration of sodium dodecyl sulfate is 10 g/L,ultrasonic time is 24 min,ultrasonic power is 400 W and the mass ratio of hexadecane to monomer is 5%. The stability of the miniemulsion decreases with the mass ratio of p-CMS/St increasing,and Ostwald ripening may be the prime reason for the instability of p-CMS/St miniemulsion.

关 键 词：细乳液 4-乙烯基苄氯 超声 稳定性 Ostwald熟化 

分 类 号：TQ316.33[化学工程—高聚物工业]