1. Department of Materials Science and Engineering, Iowa State University, 2220 Hoover Hall, Ames, Iowa 50011, United States
2. Microelectronics Research Center, Iowa State University, 133 Applied Sciences Complex I, 1925 Scholl Road, Ames, Iowa 50011, United States
3. Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02169, United States
4. Biopolymer and Bio-composites Research Team, Center for Bioplastics and Bio-composites, Iowa State University, 1041 Food Sciences Building, Ames, Iowa 50011, United States