丙烯酸聚乙二醇酯-甲基丙烯酸共聚物对CaCO_3微粒形貌的调控  

Morphological Control of CaCO_3 Particles by a Poly(ethylene glycol) Acrylate-block-(methacrylic acid) Copolymer

作　　者：王芳[1] 徐桂英[1] 张志庆[1] 肖莉[1] 

机构地区：[1]山东大学胶体与界面化学教育部重点实验室,济南250100

出　　处：《化学学报》2003年第9期1488-1491,共4页Acta Chimica Sinica

基　　金：国家自然科学基金 (No.2 99730 2 3)资助项目

摘　　要：研究了两种聚合物丙烯酸聚乙二醇酯 (PEGA)和丙烯酸聚乙二醇酯 -甲基丙烯酸共聚物 (PEGA PMAA)对CaCO3粒子生长的调控 .发现PEGA调控下得到CaCO3 片层状粒子的粒径比在纯水中的小 ,而PEGA PMAA调控下的粒子粒径较大 ,并且长成了奇特的花状形貌 .这说明PEGA在CaCO3 粒子生长过程中起了阻碍作用 ,而双亲水的PEGA PMAA则促进了CaCO3 粒子的生长 .Poly(ethylene glycol) acrylate-block-(methacrylic acid) copolymer (PEGA-PMAA) having double-hydrophilic groups was synthesized and characterized. The morphology of the CaCO3 particles formed in the presence of PEGA-PMAA was investigated, which was compared with the CaCO3 particles formed in the presence of poly (ethylene glycol) acrylate (PEGA) having single-hydrophilic group. The results show that the morphology of CaCO3 particles varies with the polymers presented. The size of the CaCO3 particles controlled by PEGA is smaller than that in water. However, the size of the CaCO3 particles controlled by PEGA-PMAA is much larger. Especially, the flower-shaped calcite with large length of about 7 mum is very interesting. This indicates that PEGA prevents the growth of the CaCO3 particles, while PEGA-PMAA promotes the growth of the CaCO3 particles.

关 键 词：丙烯酸聚乙二醇酯 甲基丙烯酸 共聚物 CACO3 微粒 形貌调控 碳酸钙 表征 

分 类 号：O631[理学—高分子化学]