【摘要】 利用两亲嵌段共聚物聚苯乙烯-丙烯酸(简称PAS)在水相中构成的空间立体三维框架 结构和亲水链聚丙烯酸在水相空间的伸展及其上羧酸基对钙离子的沉积作用，合成了球形纳 米碳酸钙复合物，并通过控制共聚物的浓度初步实现了复合物宏观尺寸的调控，制备出粒径 约２μm，４μm，８μm的球形纳米复合物。XRD分析结果表明复合物中碳酸钙粒子属方解石 型纳米微晶，有较大的晶格畸变率，微晶尺寸随球形复合物的增大反而减小。热分析研究显 示，复合物中有机物含量大于１２％，热分解稳定性的提高认为通过羧酸Ca-O键合使碳酸 钙与聚合物有效复合。更多还原

【Abstract】 The spherical CaCO 3 compounds has been synthesized in the presence of the amphiphilic block copo lymer,the polystyrene-b-poly(acrylic acid)block copolymer.The size of the sphere could be regulated by controlling the concentration of the copolymer.The thermal decomposition behavior of the compounds has been investigated.It was r evealed by XRD analysis that the grains in the compounds was nano-scaled calcit e.更多还原