Initiator-free photopolymerization of common acrylate monomers with 254 nm light

Masahiro Furutani, Takashi Ide, Shinobu Kinoshita, Raita Horiguchi, Ichiro Mori, Kazuhiro Sakai, Koji Arimitsu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Using an available light source at a wavelength of 254 nm, common acrylate monomers were polymerized without any photoinitiators, which was confirmed using Fourier transform IR (FTIR) spectroscopy, 1H NMR, gel permeation chromatography and fast atom bombardment mass spectrometric measurements. It was found that phenyl acrylate shows higher conversion than n- and t-butyl acrylates. A trifunctional acrylate was also used for UV curing. The cured films were fabricated successfully on different kinds of substrates by using a batch- or conveyor-type irradiation apparatus. It is indicated from FTIR spectral measurements that ca 40%–50% of acryloyl groups are consumed by the photopolymerization. Oxygen concentration in the sample chamber influences the photopolymerization, indicating that the polymerization proceeds via a radical process.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalPolymer International
Volume68
Issue number1
DOIs
Publication statusPublished - Jan 2019

Keywords

  • 254 nm light
  • UV curing
  • acrylate monomer
  • initiator-free
  • photopolymerization

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