1. State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun Jilin 130022 China
2. Department of Chemical Engineering and ScienceUniversity of Science and Technology of China Hefei Anhui 230026 P. R. China
3. Department of PolymerSchool of Chemistry and Chemical EngineeringYantai, University Yantai 264005 China
4. Department of Mechanical EngineeringUniversity of Akron Akron OH 44325‐3903 USA