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Photopolymerization of acrylate suspensions

Paper ID Volume ID Publish Year Pages File Format Full-Text
26805 43979 2012 8 PDF Available
Title
Photopolymerization of acrylate suspensions
Abstract

Polymerization time parameters, induction time t0 and t50 obtained from Boltzmann sigmoidal fitting, were determined from photorheology experiments performed on diacrylate and glycol dimethacrylate suspensions with silicon dioxide, with varying photoactives concentration and in the presence of diluents. The experiments were performed at the intensity ∼23 mW/cm2. t0 and t50 are linearly proportional to reciprocal photoinitiator concentration 1/cP, dye concentration cD and inhibitor concentration cINH as predicted by modified inhibitor exhaustion model. Further, the effect of a reactive and an inert diluent is shown.

► Photorheological curing time proportional to inverse photoinitiator concentration. ► Photorheological curing time linearly proportional to inert dye concentration. ► Photorheological curing time linearly proportional to inhibitor concentration. ► Curing time data agrees with theoretical model.

Keywords
Photopolymerization; (Meth)acrylate monomers; Ceramic suspensions; SiO2
First Page Preview
Photopolymerization of acrylate suspensions
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 247, 1 November 2012, Pages 74–81
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering