分散聚合技术及其研究进展

Progress on Research and Technology of Dispersion Polymerization

介绍了分散聚合体系中各组分及反应条件对反应过程和最终产物性能的影响,简要归纳了分散聚合成核机理、稳定机理及其反应动力学,并着重阐述了近年来分散聚合发展的新技术以及制备的功能微球在各领域的应用等方面的研究进展。分散聚合与其它非均相聚合方法相比,是制备粒径范围在1~10μm且单分散性较好的聚合物微球的有效方法。最近,许多新思路不断引入分散聚合体系,如采用水和超临界CO2作为分散介质,尝试微波和辐射引发聚合以及按照活性聚合机理进行反应等。

In this paper, effects of dispersion polymerization parameters on reaction process and production ability are introduced. Particle nucleation, stable mechanism and kinetics in dispersion polymerization system are concluded briefly. Moreover, it is mainly reviewed novel technologies developed in dispersion polymerization and applications of its products in various fields nowadays. Compared dispersion polymerization with herterogeneous polymerization, it is a good method to prepare polymer microsphere with 1-10μm particle size and narrow distribution. Recently, many fresh ideas are added into dispersion polymerization system, such as using water and super critical CO2 as medium, initiation by microwave and radiation and reaction in term of living polymerization mechanism.