1. School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Republic Of Singapore, Technical Center, Union Carbide Asia Pacific, Inc., 16 Science Park Drive, The Pasteur, Singapore 118227, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada, and UCAR Emulsions Systems Research and Development, Union Carbide Corporation, Cary, North Carolina 27511