Hubert Lobo is President, DatapointLabs, Ithaca, New York. The author of several professional publications, he holds one patent and is a Fellow of the Society of Plastics Engineers. A member of the American Society for Testing and Materials, among other organizations, Mr. Lobo received the B.E. degree (1984) in chemical engineering from Mysore University, India, and the M.E. degree (1986) in chemical engineering from Cornell University, Ithaca, New York. Jose V. Bonilla is Senior Scientist, International Specialty Products, Calvert City, Kentucky. The author or coauthor of numerous professional publications, he is a member of the American Chemical Society. Dr. Bonilla has many years of experience in plastics technology, specialty chemicals, and specialty polymers for the pharmaceutical and personal care industries. He also has experience in advanced research at Argonne National Laboratory, Illinois, and industrial technologies at GE Plastics and ISPChemicals. Dr. Bonilla received the M.S. (1982) and Ph.D. (1985) degrees in chemistry from the University of Oklahoma, Norman.