微波种子聚合法合成均分散无皂高分子微球

PREPARATION OF MONODISPERSED SURFACTANT FREE FICROSPHERES BY THE PRESENCE OF SEEDS AND MICROWAVE IRRADIATION

用微波脉冲辐射的方法进行了ＳＴ（苯乙烯）和ＭＭＡ（甲基丙烯酸甲酯）的种子聚合．用动态光散射（ＬＬＳ）以及透射电镜（ＴＥＭ）等手段对聚合物微球进行了表征．比较两种高分子微球的形成过程，获得了一些关于微球形成机理的可贵信息．ＰＳｔ 微球的形成过程主要是在界面上进行，而ＰＭＭＡ 在低浓度下。

Polymerization of ST\,MMA was conducted by the presence of seeds and microwave irradiation. The property of the particles was characterized by LLS and TEM. Making comparison between these two microspheres formation process, we have obtained some of information about mechanism of the particle formation. The formation process of PSt particle was mainly conducted on the surface of the particle however, for PMMA in the lower concentration, the process was mainly carried out in the solution, in contrary, in the high concentration, mainly on the interface solid liquid.