fulltext.study @t Gmail

Synthesis and evaluations of novel photoinitiators with side-chain benzophenone, derived from alkyl α-hydroxymethacrylates

Paper ID Volume ID Publish Year Pages File Format Full-Text
26774 43976 2014 7 PDF Available
Title
Synthesis and evaluations of novel photoinitiators with side-chain benzophenone, derived from alkyl α-hydroxymethacrylates
Abstract

•One monomeric and two polymeric photoinitiators were synthesized.•These photoinitiators constitute the first examples of RHMA-based photoinitiators.•Photopolymerization efficiency of the initiators was determined using photo-DSC.•One of the polymeric initiators was found to have higher efficiency than benzophenone and the monomeric one.

A novel monomeric photoinitiator, tert-butyl 2-((4-benzoylphenoxy)methyl)acrylate (1), with a side-chain benzophenone (BP) group was synthesized from tert-butyl α-bromo methacrylate (TBBr) and 4-hyroxybenzophenone. It was thermally homo- and copolymerized with a coinitiator, N,N-dimethylaminoethyl methacrylate (DMAEM), using free radical polymerization to give the corresponding polymeric photoinitiators (poly-1 and poly(1-co-DMAEM)). The polymeric photoinitiators showed similar UV absorption spectra to 1, which were red-shifted compared to BP. Photophysical studies such as phosphorescence and laser flash photolysis in addition to photopolymerization of methacrylates were performed. The photopolymerizations of triethylene glycol dimethacrylate (TEGDMA) and 1,6-hexanedioldiacrylate (HDDA) initiated by 1, poly-1, poly(1-co-DMAEM) and BP were studied by photo-DSC. The polymeric initiator (poly-1) was found to have higher efficiency than BP and monomeric initiatior 1.

Keywords
Photopolymerization; Polymeric photoinitiator; Benzophenone; Synthesis; Alkyl α-hydroxymethacrylates
First Page Preview
Synthesis and evaluations of novel photoinitiators with side-chain benzophenone, derived from alkyl α-hydroxymethacrylates
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 274, 30 January 2014, Pages 43–49
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us