Preparation and Viscoelastic Behavior of Methacrylate Ionomers Crosslinked by Titanium(IV) and Zirconium(IV).
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- GOTOH Yasuo
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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- IMAKITA Junya
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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- OHKOSHI Yutaka
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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- NAGURA Masanobu
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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Description
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.
Journal
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- Polymer Journal
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Polymer Journal 32 (10), 838-844, 2000
The Society of Polymer Science, Japan
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Details 詳細情報について
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- CRID
- 1390001206288112896
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- NII Article ID
- 10006261773
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- NII Book ID
- AA00777013
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- COI
- 1:CAS:528:DC%2BD3cXnsFyjtb0%3D
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- ISSN
- 13490540
- 00323896
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- NDL BIB ID
- 5546137
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed