纳米碳酸钙聚苯乙烯复合粒子的制备与表征.pdf

Vol. 33 No. 6 ( ) 811 200712 Journal of East China University of Science an Technology ( Natural Science E ition) : 2007) / 1 1 2 2 卢振潇, 陈建定 , 吴秋芳 , 於定华 ( 1. 华东理工大学材料科学与工程学院, 国家超细粉末工程研究中 , 上海200237; 2. 上海华明高技术( 集团) 有限公司, 上海200237) : 通过无皂乳液聚合制备了纳米碳酸钙/ 聚苯乙烯复合粒子, 研究了单体用量对单体转化 率和包覆率的影响利用T GATEM SEM 分光光度计等仪器分析了复合粒子的包覆率结构形 态及其在甲苯中的分散性和稳定性结果表明: 在适当的单体用量下, 苯乙烯能以较高转化率聚合 并包覆于纳米CaCO3 表面; 改性后的纳米CaCO3 复合粒子在甲苯中的分散性和稳定性良好将 复合粒子分散于苯乙烯中原位合成纳米碳酸钙/ 聚苯乙烯复合材料, 该复合材料的冲击性能比纯聚 苯乙烯明显提高 : 纳米碳酸钙; 聚苯乙烯; 无皂乳液聚合; 纳米复合材料 : T Q327. 8 : A Preparation and Characterization of Nanoscale CaCO / PS Particles 3 1 1 2 2 L UZhenx iao , CH EN J ianding , W U Qiuf ang , Y U D inghua ( 1. N ational Eng ineer ing R esear h Center of Ultr af ine P ow der , S hool of M aterials S ien e and E ng ineer ing, E ast China Univ ersity of S ien e and T e hnology , S hanghai 200237, China; 2. Shanghai H uaming H iT e h ( Group ) Co. L td. , Shanghai 200237, China) Abstract: Soapless emulsion polymerization of styrene ( St) w as carrie out on the surface of nanoscale CaCO3 . Influences of the amount of monomer on conversion an encapsulation ratio w ere investigate . The monomer conversion is foun to increase w ith the increasing of St an then to slightly ecrease w hen St is excessive. The morphology of nanoscale CaCO3 particles after the reaction w as observe by T EM, SEM , in icating that CaCO3 nano