Design, synthesis, and characterization of a partially chlorinated acrylic copolymer for low-loss and thermally stable graded index plastic optical fibers

Kotaro Koike, František Mikeš, Yoshiyuki Okamoto, Yasuhiro Koike

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

As a novel material of low loss and high thermal stability, a graded index plastic optical fiber (GI POF) comprised of a copolymer of methyl α-chloro acrylate (MCA) and 2,2,2-trichloroethyl methacrylate (TCEMA) was prepared and the thermal, mechanical, and optical characteristics were investigated. Although each homopolymer had low loss and desirable high thermal stability, they had crucial disadvantages for the fiber fabrication process. To draw a MCA polymer (PMCA) fiber, it has to be heated above 270 °C. However, the polymer started to decompose at a lower temperature and produced numerous bubbles. In contrast, TCEMA polymer (PTCEMA) is too brittle to roll up during heat drawing. In this study, we succeeded to improve the strong viscoelasticity and the low decomposition temperature of PMCA and the brittleness of PTCEMA by copolymerizing MCA and TCEMA. In addition, the glass transition temperatures (T g) of the copolymers were in the range of 133-147 °C and the transmittances of the copolymers were much higher than that of PMMA which has been commonly used as a base material of POF. A suitable GI POF was obtained using the MCA and TCEMA copolymer.

Original languageEnglish
Pages (from-to)3352-3361
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume47
Issue number13
DOIs
Publication statusPublished - 2009 Jul 1

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Keywords

  • Chlorinated acrylate
  • Copolymerization
  • Graded index plastic optical fiber
  • Refractive index
  • Transparency

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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