【摘要】 将苯乙烯 ( St)在 Ca CO3 粒子水相悬浮液中进行无皂乳液聚合 ,实现了 PSt对 Ca CO3 粒子的包覆。通过复合粒子 ξ电位及水相分散性能测试证明了 Ca CO3 粒子表面 PSt的存在 ;以苯为溶剂 ,复合粒子经索氏提取器抽提 2 4h后的结果表明 ,PSt在 Ca CO3 粒子表面包覆量为 Ca CO3 重量的 6.4%更多还原

【Abstract】 CaCO 3-PSt(Polystyrene) composite particles were prepared by soapfree emulsion polymerization of St in aqueous phase in the presence of CaCO 3.The encapsulation of CaCO 3 by PSt was characterized by Scanning Electron Microscopy and Zeta potential (ξ) measurement.The results of extraction showed that a maximum of real encapsulation ratio of 6.4% was obtained regardless of variations in St/CaCO 3 ratios.更多还原