Article

Synthesis of main chain polymeric benzophenone photoinitiator via thiol-ene click chemistry and Its use in free radical polymerization

  1. Gokhan Temel1,2,*,
  2. Nurcan Karaca2,
  3. Nergis Arsu2,*

Article first published online: 13 OCT 2010

DOI: 10.1002/pola.24330

Issue

Journal of Polymer Science Part A: Polymer Chemistry

Journal of Polymer Science Part A: Polymer Chemistry

Volume 48, Issue 23, pages 5306–5312, 1 December 2010

Additional Information

How to Cite

Temel, G., Karaca, N. and Arsu, N. (2010), Synthesis of main chain polymeric benzophenone photoinitiator via thiol-ene click chemistry and Its use in free radical polymerization. J. Polym. Sci. A Polym. Chem., 48: 5306–5312. doi: 10.1002/pola.24330

Author Information

  1. 1

    Department of Polymer Engineering, Faculty of Engineering, Yalova University, Yalova 77100, Turkey

  2. 2

    Department of Chemistry, Yildiz Technical University, 34210 Davutpasa, Istanbul, Turkey

*Department of Polymer Engineering, Faculty of Engineering, Yalova University, Yalova 77100, Turkey

Publication History

  1. Issue published online: 28 OCT 2010
  2. Article first published online: 13 OCT 2010
  3. Manuscript Accepted: 19 AUG 2010
  4. Manuscript Received: 10 AUG 2010

Funded by

  • TUBITAK and Yildiz Technical University Research Fund

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (945K)

Keywords:

  • benzophenone;
  • click chemistry;
  • photopolymerization;
  • photochemistry;
  • polymeric photoinitiator;
  • radical polymerization;
  • thiol-ene

Abstract

Main chain polymeric benzophenone photoinitiator (PBP) was synthesized by using “Thiol-ene Click Chemistry” and characterized with 1H NMR, FTIR, UV, and phosphorescence spectroscopies. PBP as a polymeric photoinitiator presented excellent absorption properties (ε294 = 28,300 mol−1L−1cm−1) compared to the molecular initiator BP (ε252 = 16,600 mol−1L−1cm−1). The triplet energy of PBP was obtained from the phosphorescence measurement in 2-methyl tetrahydrofurane at 77 K as 298.3 kJ/mol and according to phosphorescence lifetime, the lowest triplet state of PBP has an n-π* nature. Triplet–triplet absorption spectrum of PBP at 550 nm following laser excitation (355 nm) were recorded and triplet lifetime of PBP was found as 250 ns. The photoinitiation efficiency of PBP was determined for the polymerization of Hexanedioldiacrylate (HDDA) with PBP and BP in the presence of a coinitiator namely, N-methyldiethanolamine (MDEA) by Photo-DSC. The initiation efficiency of PBP for polymerization of HDDA is much higher than for the formulation consisting of BP. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010

View Full Article (HTML) Get PDF (945K)