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Photopolymerization kinetics of α-disulfone cationic photoinitiator

Paper ID Volume ID Publish Year Pages File Format Full-Text
27081 43999 2012 7 PDF Available
Title
Photopolymerization kinetics of α-disulfone cationic photoinitiator
Abstract

An α-disulfone cationic photoinitiator called 4-tolyl methyl disulfone was synthesized and characterized by UV–vis absorption spectroscopy, LCMS, IR and NMR. Eight vinyl ether monomers were chosen to study the kinetics of photopolymerization by real-time infrared spectroscopy (FT-IR). It showed that 4-tolyl methyl disulfone was an effective cationic photoinitiator. The rate of polymerization and ultimate conversion increased with increase of 4-tolyl methyl disulfone concentration and light intensity.

► Under UV light, photolysis occurred for TMDS in methanol to form sub-sulfonic acids. ► TMDS has a maximal absorption of 237 nm in ethanol due to π–π* transition with ɛmax = 2.73 × 104 L mol−1 cm−1. ► Eight vinyl ether monomers were chosen to study the kinetics of photopolymerization by real-time infrared spectroscopy (FT-IR). ► TMDS was an effective cationic photoinitiator. Both rate of polymerization and final conversion was increased with increase in TMDS concentration and light intensity.

Keywords
Cationic photoinitiator; Vinyl ether monomer; Kinetics; FT-IR
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 232, 15 March 2012, Pages 57–63
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
You save - $31
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100% Money Back Guarantee
Full-text PDF Download
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