Photolatent base/radical photoinitiator catalyzed poly(thiourethane)/poly ((meth)acrylate) networks: Dual network formation via radical mediated photopolymerization

摘要

Unique network structures and physical properties have been attained in hybrid polymeric systems. Here, a combination of (meth)acrylates, thiols, and diisocyanates were photopolymerized using a photolatent base/radical photoinitiator. Tetraethylthiuram disulfide (TED), an iniferter, and TEMPO were added to control the rate of radical polymerization. The effect of TED and TEMPO on the kinetics of thiourethane and thiol-(meth)acrylate reactions was monitored with real-time IR spectroscopy. Kinetic and mechanical characterization indicates that dual T_g networks form simultaneously.