Design of Heat-Resistant and Transparent Polymer Materials by Thiol－Ene Reaction of Thiol-Modified Random Silsesquioxane and <i>N</i>-Allylmaleimide Copolymers

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  • Koki Yamamoto
    Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
  • Yoshihito Suzuki
    Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
  • Akikazu Matsumoto
    Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University

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Other Title
  • チオール変性ランダム型シルセスキオキサンとN-アリルマレイミド共重合体のチオール－エン反応による耐熱透明ポリマー材料の設計
  • チオール ヘンセイ ランダムガタ シルセスキオキサン ト N-アリルマレイミド キョウ ジュウゴウタイ ノ チオール-エン ハンノウ ニ ヨル タイネツ トウメイ ポリマー ザイリョウ ノ セッケイ

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<p>Organic－inorganic hybrid materials were prepared using a thiol－ene reaction between random-type silsesquioxanes containing a mercapto group and N-allylmaleimide copolymers. First, various copolymers of N-allylmaleimide with different sequence structures and allyl contents were synthesized by ternary radical copolymerization of N-allylmaleimide combined with N-(2-ethylhexyl)maleimide and diisobutene, and binary copolymerization with 2-ethylhexyl acrylate in chloroform at 60℃. Next, the copolymers were thermally cured using thiol-modified silsesquioxanes as the cross-linking agent in the presence of triallyl isocyanurate, and the reactions of the allyl and mercapto groups were monitored by IR spectroscopy. All of the obtained organic－inorganic hybrid polymer materials showed excellent heat resistance and transparency. The effects of the ratio of allyl groups to mercapto groups in feed composition of the thermosetting systems and the content of the allyl groups in the copolymers on the thermal and mechanical properties of the cured products were investigated.</p>

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