【摘要】 以十二烷基硫酸钠(SDS)和十六醇(HD)为复合乳化体系,偶氮二异丁腈(AIBN)为引发剂,甲基丙烯酸甲酯(MMA)/甲基丙烯酸丁酯(BMA)/苯乙烯(St)为混合单体,在40℃~45℃引发聚合,制备了分散相占85%以上的稳定超浓乳液。探讨了引发剂种类、浓度,复合乳化剂配比、浓度,聚合温度等因素对乳液稳定性和聚合速率的影响。建立了该聚合反应的动力学方程。更多还原

【Abstract】 Stable concentrated emulsion of MMA/BMA/St was prepared by using sodium dodecyl sulfate（SDS） and hexadecamol（HD） as the compound emulsifier, with Azobisisobutyronitrile（AIBN） as initiator, the concentrated emulsion was polymerized at 40 ℃～45 ℃ which the volume fraction of the dispersed phase can be over 85%. Furthermore, the effects of kinds and concentration of initiator, the mass ratio and concentration of emulsifier, and the polymerization temperature on the stability and polymerization rate were investigated. The polymerization kinetics equation is R_p=k[I]^0.23[E]^0.64[M]^-0.55 and apparent activation energy is E_a=（114.57） kJ/mol.更多还原