核壳型复合粒子的合成及表征

Preparation and Characterization of Talcum-polymer Complex Particles with Core-shell Structure

以丙烯酸丁酯(BA)为第一单体,甲基丙烯酸甲酯(MMA)为第二单体,二乙烯苯(DVB)为交联剂,经分步乳液聚合,对表面偶联化处理的滑石粉微粒进行包覆,制得了以滑石粉粒子为核、PBA-co-DVB为弹性芯层、PBA-co-PMMA无规共聚物为过渡层、PMMA为壳层结构的多层复合粒子。通过FT-IR、DSC及DMA等检测表征,确认了其核壳聚合物包覆的形态结构。

Complex particles of the fine talcum particles （coupled with KH - 570） and the polymers were prepared by emulsion polymerization. Butyl acrylate（BA） as the first monomer was copolymerzed with divinylbenzene（DVB） as cross - link agent to form a sandwich layer PBA - co - DVB, and methyl methacrylate （MMA） as the second monomer was introduced to build a transition layer PBA - co- PMMA and a shell layer PMMA. The morphology and structure of the core - shell particles were characterized by FT - IR, DSC, and DMA.