ScholarLens Back to search
2012•Fain kemikaruRequires access

Preparation and Properties of Polyurethane-type Polymeric Thioxanthone Photoinitiators

Jun Wei

Open publisher page 0 citations

Abstract

Polyurethane-type polymeric photoinitiators containing side-chain thioxanthone and in-chain coinitiator amine were synthesized through stepwise polymerization of diisocyanate,2-(2,3-dihydroxy)propoxy-thioxanthone(HPTX) and N-methyl diethanolamine(MDEA).The thioxanthone and coinitiator amine structures were successfully introduced into the backbones of polymeric photoinitiators.FTIR and 1HNMR analyses confirmed the structures of polymeric photoinitiators.UV-Vis spectra indicated that the macromolecular chain had no obvious effect on the maximal absorption of thioxanthone moieties.Photopolymerization of polyurethane acrylate resin(PUA),initiated by polyurethane-type polymeric thioxanthone photoinitiators,was studied through photo differential scanning calorimetry(photo-DSC).The results indicate that,among the photoinitiators synthesized in this article,PU-IMTX is the most efficient photoinitiator for the photopolymerization of PUA.

About this research paper

What this paper is about

Polyurethane-type polymeric photoinitiators containing side-chain thioxanthone and in-chain coinitiator amine were synthesized through stepwise polymerization of diisocyanate,2-(2,3-dihydroxy)propoxy-thioxanthone(HPTX) and N-methyl diethanolamine(MDEA).The thioxanthone and coinitiator amine structures were successfully introduced into the backbones of polymeric photoinitiators.FTIR and 1HNMR analyses confirmed the structures of polymeric photoinitiators.UV-Vis spectra indicated that the macromolecular chain had no obvious effect on the maximal absorption of thioxanthone moieties.Photopolymerization of polyurethane acrylate resin(PUA),initiated by polyurethane-type polymeric thioxanthone photoinitiators,was studied through photo differential scanning calorimetry(photo-DSC).The results indicate that,among the photoinitiators synthesized in this article,PU-IMTX is the most efficient photoinitiator for the photopolymerization of PUA.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Polyurethane-type polymeric photoinitiators containing side-chain thioxanthone and in-chain coinitiator amine were synthesized through stepwise polymerization of diisocyanate,2-(2,3-dihydroxy)propoxy-thioxanthone(HPTX) and N-methyl diethanolamine(MDEA).The thioxanthone and coinitiator amine structures were successfully introduced into the backbones of polymeric photoinitiators.FTIR and 1HNMR analyses confirmed the structures of polymeric photoinitiators.UV-Vis spectra indicated that the macromolecular chain had no obvious effect on the maximal absorption of thioxanthone moieties.Photopolymerization of polyurethane acrylate resin(PUA),initiated by polyurethane-type polymeric thioxanthone photoinitiators,was studied through photo differential scanning calorimetry(photo-DSC).The results indicate that,among the photoinitiators synthesized in this article,PU-IMTX is the most efficient photoinitiator for the photopolymerization of PUA.

Key concepts: Thioxanthone, Photoinitiator, Photopolymer, Polyurethane, Polymer chemistry, Polymerization, Diethanolamine, Chemistry

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Preparation and Properties of Polyurethane-type Polymeric Thioxanthone Photoinitiators — Research Paper | ScholarLens