光解離性保護基の導入が PLAの力学特性・加水分解特性に及ぼす影響に関する分子シミュレーション Molecular Simulation on Efect of Introduction of Photo-dissociable Protecting Groups on Mechanical and Hydrolysis Properties of PLA

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著者

    • 田中 基嗣 TANAKA Mototsugu
    • 金沢工業大学工学部機械工学科 Department of Mechanical Engineering, College of Engineering, Kanazawa Institute of Technology
    • 野原 勇太 NOHARA Yuta
    • 金沢工業大学工学部機械工学科 Department of Mechanical Engineering, College of Engineering, Kanazawa Institute of Technology
    • 瀬戸 直樹 SETO Naoki
    • 金沢工業大学工学部機械工学科 Department of Mechanical Engineering, College of Engineering, Kanazawa Institute of Technology
    • 斉藤 博嗣 SAITO Hiroshi
    • 金沢工業大学工学部機械工学科 Department of Mechanical Engineering, College of Engineering, Kanazawa Institute of Technology
    • 金原 勲 KIMPARA Isao
    • 金沢工業大学ものづくり研究所 Research Laboratory for Integrated Technological Systems, Kanazawa Institute of Technology

抄録

The purpose of this study was the clarification of mechanisms where the introduction of photo-dissociable protecting groups affects mechanical and hydrolysis properties of PLA, by combination of experiments and molecular simulation, aiming to obtain a guideline to design the optimum introduction condition. First, the mechanism of decreasing in elastic modulus of PLA by introduction of protecting groups was discussed using a molecular dynamics simulation. As a result, it was suggested that the deflection of helical molecular structure of PLA is one of the main reasons. Secondary, the change in introduction efficiency of protecting groups was experimentally evaluated using a FT-IR. Here, the temperature of introduction process and the amount of protecting groups was varied. In addition, its mechanism was discussed based on a molecular orbital calculation. As results, it was suggested that the introduction efficiency of protecting groups into carboxyl end groups of PLA is determined by the relation between the total energy of the reaction field and the activation energy between protecting groups and reaction sites, resulting in elucidation of existing range of the optimum introduction condition.

収録刊行物

  • 日本複合材料学会誌

    日本複合材料学会誌 42(2), 49-58, 2016

    日本複合材料学会

各種コード

  • NII論文ID(NAID)
    130005549351
  • NII書誌ID(NCID)
    AN00196748
  • 本文言語コード
    JPN
  • ISSN
    0385-2563
  • NDL 記事登録ID
    027237621
  • NDL 請求記号
    Z14-655
  • データ提供元
    NDL  J-STAGE 
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