“DEVELOPMENT OF POLYMERS FOR OPTICAL APPLICATIONS”

Abstract

development for over 500 years. While the most important advances have com Contact lenses are a modern technological breakthrough yet they have been in e in the latter half of the 1900’s, this area of science is still undergoing tremendous growth. Chemical engineer’s are critical for the development and manufacturing of the contact lens of the future. In this project work hydrogel based on monomer 2-hydroxyethyl methacrylate, highly hydrophilic nonionic monomer such as N-vinyl pyrrolidone (NVP), and crosslinking agent EGDMA, was prepared by gamma radiation technique. The hydration (%), leachability, hardness, and effect of gamma radiation on these properties were investigated in this study. Three dyes namely reactive blue- 4, reactive blue- 19 and reactive black-5 dye were used to tint the contact lenses, and the study of the effect of these dyes in water absorbtion was done and found out the exact dose of gamma radiation where leachability was found to be zero. The result s...