1. State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun 130022 P. R. China
2. Polymer Composite Engineering LaboratoryChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun 130022 P. R. China
3. School of Applied Chemistry and EngineeringUniversity of Science and Technology of China Jinzhai Road No 96 Hefei 230026 P. R. China