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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2004, Vol. 5 Issue (6): 709-713    DOI: 10.1631/jzus.2004.0709
Material & Chemical Science     
Preparation of poly (methyl methacrylate)/nanometer calcium carbonate composite by in-situ emulsion polymerization
SHI Jian-ming, BAO Yong-zhong, HUANG Zhi-ming, WENG Zhi-xue
Institute of Polymer Reaction Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  Methyl methacrylate (MMA) emulsion polymerization in the presence of nanometer calcium carbonate (nano-CaCO3) surface modified with γ-methacryloxypropyltrimethoxysilane (MPTMS) was carried out to prepare poly (methyl methacrylate) (PMMA)/nano-CaCO3 composite. The reaction between nano-CaCO3 and MPTMS, and the grafting of PMMA onto nano-CaCO3 were confirmed by infrared spectrum. The grafting ratio and grafting efficiency of PMMA on nano-CaCO3 modified with MPTMS were much higher than that on nano-CaCO3 modified with stearic acid. The grafting ratio of PMMA increased as the weight ratio between MMA and nano-CaCO3 increased, while the grafting efficiency of PMMA decreased. Transmission electron micrograph showed that nano-CaCO3 covered with PMMA was formed by in-situ emulsion polymerization.

Key words： Methyl methacrylate      Nanometer calcium carbonate      Emulsion polymerization      γ-methacryloxypropyltrimeth-oxysilane      Grafting     
Received: 04 July 2003     
CLC:  TQ316.334  
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BAO Yong-zhong
SHI Jian-ming
HUANG Zhi-ming
WENG Zhi-xue
Cite this article:

SHI Jian-ming, BAO Yong-zhong, HUANG Zhi-ming, WENG Zhi-xue. Preparation of poly (methyl methacrylate)/nanometer calcium carbonate composite by in-situ emulsion polymerization. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2004, 5(6): 709-713.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2004.0709     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2004/V5/I6/709

[1] SUN Jun-quan, PAN Zhi-da, HU Wei-qiu, YANG Shi-lin. POLYMERIZATION OF METHYL METHACRYLATE WITH ETHYLENE BRIDGED HETERODINUCLEAR METALLOCENE OF SAMARIUM AND TITANIUM—STUDY ON SYNERGISM AND KINETICS[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2001, 2(4): 366-371.
[2] HU Wei-qiu, SUN Jun-quan, PAN Zhi-da, WU Zhao-li, XU Yu-ming. THE POLYMERIZATION OF METHYL METHACRYLATE WITH A NEW TIN-BRIDGED YTTROCENE/Al(i-Bu)3[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2000, 1(2): 157-161.