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化学学报
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化学学报 ›› 2004, Vol. 62 ›› Issue (5): 523-526. 上一篇    下一篇

研究论文

CaCO3粉末表面光聚合处理的研究

雷景新1, 何光健1, 高峻2   

  1. 1. 四川大学高分子研究所, 成都, 610065;
    2. 四川大学化工学院, 成都, 610065
  • 投稿日期:2003-05-12 修回日期:2003-10-28 发布日期:2014-02-18
  • 通讯作者: 雷景新,E-mail:jxlei@scu.edu.cn E-mail:jxlei@scu.edu.cn

Photo Polymerization of Acrylamide onto CaCO3 Particle Surfaces

LEI Jing-Xin1, HE Guang-Jian1, GAO Jun2   

  1. 1. Polymer Research Institute of Sichuan University, Chengdu 610065;
    2. Chemical Engineering Institute of Sichuan University, Chengdu 610065
  • Received:2003-05-12 Revised:2003-10-28 Published:2014-02-18

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采用表面光聚合技术处理CaCO3粉末,研究了反应温度、时间、单体浓度等对丙烯酰胺(AAM)在CaCO3粉末表面光聚合的影响,并采用X光电子能谱(ESCA)、粒度分析、扫描电子显微镜(SEM)和模型模拟分析等研究了表面光聚合处理碳酸钙(CaCO3)的结构.结果表明:紫外光能有效地引发AAM在CaCO3粒子表面聚合.经光聚合处理后,CaCO3粒子表面形成了聚丙烯酰胺(PAAM)包覆层,该包覆层与CaCO3粒子结合紧密,不能被溶剂洗涤清除.光聚合处理后CaCO3粒子表面较光滑,分散性可得到提高,CaCO3粒子粒径增大.

关键词: CaCO3, 丙烯酰胺, 表面处理, 紫外线, 光聚合

Photo polymerization of acrylamide (AAM) onto CaCO3 particle surfaces and its structure were studied by polymerization effectiveness, electron spectra for chemical analysis (ESCA), scanning electron microscopy (SEM) and particle size measurements. The results show that AAM monomer can be effectively polymerized onto CaCO3 particle surface to form a PAAM layer by UV irradiation. This layer tightly wraps the CaCO3 particle and can not be washed out by acetone. An obvious N 1s peak is observed on the ESCA spectra of the treated CaCO3 particle, however no N 1s peak appears on the spectra of original CaCO3 particle. After being treated by surface polymerization, CaCO3 particle size will increase.

Key words: CaCO3, acrylamide, surface modification, ultraviolet, photo polymerization