Influence of network structure on the degradation of poly(ether)amine-cured epoxy resins by inorganic acid

Jonathon D. Tanks*, Masatoshi Kubouchi, Yoshihiko Arao

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

In this paper, we investigate the case of bisphenol-type epoxy crosslinked with poly(ether)amine, immersed in sulfuric acid at elevated temperature. The results show that very high equilibrium mass-change (up to 40%) is observed, and that amine protonation is largely responsible for this behavior. When the acid solution concentration is 5mass% or higher, alcohol dehydration and aromatic ether cleavage reactions occur by excess acid (after amine protonation). A mechanistic degradation model is proposed, which requires no empirical parameters and accounts for polymer network structure differences. The model is supported by calculating the theoretical crosslink density using gravimetric data of penetrated acid at equilibrium.

本文言語English
ページ(範囲)153-159
ページ数7
ジャーナルPolymer Degradation and Stability
157
DOI
出版ステータスPublished - 2018 11
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • ポリマーおよびプラスチック
  • 材料化学

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