1. School of Chemistry and Materials Science, Liaoning Shihua University, Fushun Liaoning 113001,P.R. China;
2. Baicheng Vocational and Technical College, Baicheng Jilin 137000, P.R.China;
3. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun Jilin 130022, P.R.China