核/壳结构聚丙烯酸酯塑料增韧剂的制备与结构控制

Preparation and Structure Control of Poly(butyl acrylate)/ Poly(methyl methacrylate) Core/Shell Impact Modifier

核／壳结构聚丙烯酸酯塑料增韧剂的制备与结构控制张会轩戴英杨海东＊冯之榴（吉林工学院化工系长春１３００１２）（中国科学院长春应用化学研究所１３００２２）关键词聚丙烯酸酯，增韧剂，制备，种子乳液聚合１９９６－０８－２８收稿，１９９７－０１－０６修回国家自...

Poly(butyl acrylate)/poly(methyl methacrylate) core/shell impact modifiers were prepared by seeded emulsion polymerization. The structures of the modifiers have been designed and the factors affecting the structure formation have been discussed. In order to inhibite the formation of new particles during seeded polymerization, an oil soluble redox initiator was used and the concentration of the emulsifier and feed speed of the monomer were controlled. The results showed that the particle size of the impact modifier can be adjusted by varing the amount of seed emulsion used in the seeded emulsion polymerization. TEM micrographs showed that the impact modifiers are monodisperse particles of spherical structure.