季铵盐型醋-丙-苯共聚改性乳液的制备

以醋酸乙烯酯,苯乙烯和丙烯酸丁酯为单体进行三元接枝共聚反应,引入自制的聚季铵盐制备了季铵盐型醋-丙-苯三元改性乳液。考察了单体配比、乳化剂种类及用量和搅拌速率对乳液性能的影响,以及聚季铵盐对乳液抗菌性的影响。季铵盐型醋-丙-苯三元改性乳液制备的最佳条件为:以 m(十二烷基硫酸钠):m(OP-10)=2:1配制的复配物为乳化剂,质量分数3.5%;m(苯乙烯):m(丙烯酸丁酯)=5:4,质量分数20%;醋酸乙烯酯质量分数30%;聚季铵盐质量分数10%;搅拌速率160 r/min。乳液黏度可达4.740 mPa·s,透光率可达0.41,粒径大小为10～30μm。

PREPARATION OF MODIFIED QUATERNARY AMMONIUM SALT EMULSION OF VINYL ACETIC ESTER-BENZENE VINYL-BUTYL ACRYLATE

Three monomer copolymerization reaction of vinyl acetate,styrene and butyl acrylate was studied.The quaternary ammonium salt V-S-B emulsion was prepared by adding the self-prepared polyquaternary ammonium salt.The influences of monomer ratios,type and concentration of emulsifi- ers and stirring rate on the emulsion property and polyquaternary ammonium salt on the antibacterial property were investigated.The optimum reaction conditions were obtained as follows:emulsifier pre- pared with m(dodecylsulfate):m(OP-10)=2:1,mass concentration of the emulsifier 3.5%,m (styrene):m(butyl acrylate)=5:4,mass concentration of the styrene and butyl acrylate 20%, mass concentration of vinyl acetate 30%,mass concentration of polyquaternary ammonium salt 10%, stirring rate 160 r/min.The viscosity,transmittance and particle diameter of the emulsion were 4.74 mPa·s,0.41 and 10-30μm,respectively.