1. Department of Polymer Materials and
Engineering, South China University of Technology, Guangzhou 510640, P. R. China
2. Key Laboratory of Beijing City for Preparation and Processing of
Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China
3. State Key Laboratory of Organic/Inorganic Composites, Beijing University of Chemical Technology, Beijing
100029, P. R. China