MMA-BA无皂乳液共聚合(Ⅰ)

Soap-Free Emulsion Copolymerization of MMA-BA ( Ⅰ )

在甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)的无皂乳液聚合体系中,加入少量反应性乳化剂ω-十一烯酸钠(SUA),用粒度分布仪、透射电子显微镜表征了胶粒平均直径、浓度及形态,用离子交换-电导滴定分析了胶粒表面性质。

Soap-free copolymerization of methyl methacrylate(MMA) and butyl acrylate(BA) in the presence of surface active comonomer, sodium undecylenate (at concentration below its CMC) was carried out. The particle size(Dw), number(Np), morphology and surface properties were charaterized with particle size analysizer, TEM and ion-exchange-conductimetric titration respectively. The results indicated that Dw and Np could be controlled by adjusting the temperature , the concentration of SUA and KPS, ionic strength, and the ratio of MMA to BA, while the particle surface properties were decided by SUA content, ionic strength and the ratio of MMA to BA.