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Advances in Materials Science and Engineering
Volume 2015, Article ID 401897, 6 pages
Research Article

The Polymerization of MMA and ST to Prepare Material with Gradient Refractive Index in Electric Field

1Engineering Research Center for Polymer Processing Equipment, Ministry of Education, Beijing 100029, China
2State Key Laboratory of Organic-Inorganic Composites, Beijing 100029, China
3The Key Laboratory of Preparation and Processing of Novel Polymer of Beijing City, Beijing University of Chemical Technology, Beijing 100029, China
4Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA

Received 16 September 2014; Revised 18 December 2014; Accepted 19 December 2014

Academic Editor: Kwangho Kim

Copyright © 2015 Yao Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Light scattering material with gradient refractive index was prepared under the electrical field by taking methyl methacrylate (MMA) monomer as the matrix with the addition of a little preheated styrene (ST) and peroxidation benzoin formyl (BPO). The material obtained under electrical field presented different transmittance and molecular weight at different parts of the cylindrical sample along the axis of the direction of electric field which led to the layering phenomenon and gradient refractive index. The disparity of molecular weight between different layers can be as much as 230 thousand. There were several peaks in the figure of GPC test of the sample under electric field. This proved that there were polymers with different molecular weights in the sample. Therefore, it can be concluded that electrical field has a significant effect on polymerization.