Preparation and Viscoelastic Behavior of Methacrylate Ionomers Crosslinked by Titanium(IV) and Zirconium(IV).

DOI Web Site 被引用文献2件 参考文献33件
  • GOTOH Yasuo
    Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
  • IMAKITA Junya
    Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
  • OHKOSHI Yutaka
    Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
  • NAGURA Masanobu
    Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan

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抄録

Ionomers of poly(methyl methacrylate-co-methacrylic acid) crosslinked by titanium (IV) (Ti4+) and zirconium (IV) (Zr4+) ions were prepared, and their structures, optical absorption and viscoelastic properties were investigated. IR measurement revealed that tetravalent metal ions were coordinated by -COO- groups of deprotonated methacrylic acid and functioned as crosslinkers. The coordination of -COO- to the Ti4+ especially brought about strong UV absorption below 360-370 nm owing to charge transfer. Dynamic mechanical thermal analysis (DMTA) showed storage modulus (E´) below glass transition temperature (Tg) and a peak temperature of tan δ for every ionomer not to increase regardless of metal ion content. This was attributed to residual alcohols. E´ above Tg increased with metal ions content, and DMTA for every ionomer was measured up to 350°C. Crosslinking by tetravalent metal ions thus greatly improves heat resistance of host polymers.

収録刊行物

  • Polymer Journal

    Polymer Journal 32 (10), 838-844, 2000

    The Society of Polymer Science, Japan

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