超声辐照醋酸乙*烯酯的乳液聚合

Emulsion Polymerization of Vinyl Acetate under Ultrasonic Irradiation

将超声波引入醋酸乙烯酯(VAc)乳液聚合,实现了醋酸乙烯酯的低温快速聚合。考察了超声功率、乳化剂十二烷基硫酸钠(SDS)和引发剂过硫酸钾(KPS)的浓度对聚合反应的影响。实验结果表明,在VAc 7 mL,H2O 63 mL,w(SDS)1%,c(KPS)4 mmol.L-1,900 W的聚合反应条件下,于25℃反应30 min,VAc的转化率高于80%。

Emulsion polymerization of vinyl acetate（VAc） was carried out at 25 ℃ for 30 rain under ultrasonic irradiation. The effects of concentration of KPS and SDS, and ultrasonic power output on polymerization were investigated. The conversion of VAc was over 80% under reaction conditions of VAe 7 mL, H20 63 mL, w（SDS） 1%, c（KPS） 4 mmol· L^-1 and power 900 W.