Characterization of UV-Cured Poly (Urethane-Methacrylate)

Abstract

Methacryloyl-terminated urethane prepolymers were prepared from 2, 4-diisocyanatotoluene and poly (oxypropylene) triol (PPT, Fig.1) with various molecular weights, and terminated with 2-hydroxyethyl methacrylate. The prepolymers may be cured by UV-radiation to give poly (urethane-methacrylate)membranes. The hard segment concentration and crosslinking density had a pronounced effect on the characteristics such as dynamic mechanical property and oxygen permeability of the membranes.