Design and synthesis of zero-zero-birefringence polymers in a quaternary copolymerization system

Shuhei Iwasaki, Zen Satoh, Houran Shafiee, Akihiro Tagaya, Yasuhiro Koike

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We designed and synthesized quaternary copolymers of methyl methacrylate (MMA), 2,2,2-trifluoroethyl methacrylate (TFEMA), benzyl methacrylate (BzMA), and 3,3,5-trimethylcyclohexyl methacrylate (TMCHMA) and we investigated their birefringence, thermal properties, and other optical properties. When the copolymer composition was MMA/TFEMA/BzMA/TMCHMA = 50:38:8:4, 40:30:7:23, or 30:21:7:42 (wt%), a zero-zero-birefringence polymer that exhibited neither orientational nor photoelastic birefringence was obtained. We demonstrated that such zero-zero-birefringence polymers with a variety of compositions could be successfully prepared in the quaternary system by using the same compensation method as applied in ternary random copolymerization. We also demonstrated that the glass-transition temperature (Tg) and refractive index (n D) of these copolymers could be controlled with high accuracy while retaining their zero-zero-birefringence property. We can therefore predict the type of birefringence, the Tg, and the nD of a particular copolymer before polymerization. Zero-zero-birefringence polymers with the most appropriate characteristics can then be synthesized selectively by quaternary copolymerization.

Original languageEnglish
Pages (from-to)3287-3296
Number of pages10
Issue number15
Publication statusPublished - 2012 Jul 6


  • Birefringence
  • Glass-transition temperature
  • Quaternary copolymerization system

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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