1. Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
2. Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
3. Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, North Carolina 27695-8301, United States