1. Department of Polymer ScienceUniversity of Akron Ohio44325
2. School of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao Shandong Province266042 China
3. Department of Biologic and Materials SciencesUniversity of MichiganAnn ArborMichigan 48109
4. Integrated Bioscience Program and Department of GeologyUniversity of Akron Ohio44325