Improvement of the physical properties of poly(methyl methacrylate) by copolymerization with pentafluorophenyl methacrylate

Akihiro Tagaya, Tomoaki Harada, Koutarou Koike, Yasuhiro Koike, Yoshiyuki Okamoto, Hongxiang Teng, Liang Yang

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Copolymers of methyl methacrylate (MMA) and pentafluorophenyl methacrylate (PFPMA) of various compositions were prepared with a free-radical initiator. When PFPMA was included in the copolymers, the glass-transition temperatures increased and showed a positive deviation from the Gordon-Taylor equation. A copolymer containing 20 wt % PFPMA exhibited almost zero orientational birefringence, and the photoelastic birefringence became zero when the copolymer contained 13 wt % PFPMA. When 20 wt % PFPMA was incorporated into the MMA copolymer, its water absorption decreased to0.4 wt % versus 1.8 wt % for poly(methyl methacrylate) (PMMA) under the same condition. The flammability of the PFPMA/MMA copolymer was reduced in comparison with that of the MMA homopolymer. The refractive indices of the PFPMA/MMA copolymers were very close to that of PMMA, and the transmittances of the copolymers were slightly better than that of PMMA.

Original languageEnglish
Pages (from-to)4219-4224
Number of pages6
JournalJournal of Applied Polymer Science
Issue number6
Publication statusPublished - 2007 Dec 15



  • Copolymerization
  • Fluoropolymers
  • Transparency

ASJC Scopus subject areas

  • Polymers and Plastics

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