1. Center for Polymer Science and Engineering, Polymer Interfaces Center, Materials Research Center, Department of Physics, Emulsion Polymers Institute, Department of Chemical Engineering, Department of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015-3194
2. Rohm and Haas Company, 727 Norristown Rd, Spring House, Pennsylvania 19477
3. Polymer Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899