Development of polymer modification based on photo-induced deprotection reaction and its application to debondable adhesion

2022 Fiscal Year Final Research Report

• Project/Area Number: 21K14672
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 35010:Polymer chemistry-related
• Research Institution: Shinshu University
• Principal Investigator: Akae Yosuke 信州大学, 繊維学部, 日本学術振興会特別研究員 (40837415)
• Project Period (FY): 2021-04-01 – 2023-03-31
• Keywords: 高分子反応 / イソシアナート / 刺激応答性材料 / オルソゴナル反応剤 / アシルアジド

Outline of Final Research Achievements

To implement on demand debondable adhesion, it is necessary to induce the huge change of the adhesive material property triggered by a certain stimuli. For that, a high efficiency of the reaction on the polymer structure is required. In this regards, the reaction between active ester and amino group were focused in this study. Namely, the construction of a novel system was investigated, where these reactive groups are introduced in the adhesive material and the debonding of the material could be induced according to the reaction triggered by a certain stimuli. As a result, it was clarified that the polymer reaction via isocyanate was useful instead of the initially planned active ester based system. Moreover, since this process could be implemented by a facile synthetic step from commercially available carboxylic acid compounds, it was suggested to be a low cost and suitable for practical use.

Free Research Field

高分子化学、超分子化学

Academic Significance and Societal Importance of the Research Achievements

重合反応によって一度合成されたプラスチック材料は通常安定であり、更なる機能化は困難である。本研究では、重合反応の後でも反応出来るような材料をデザインし、一度合成したプラスチック材料の機能化・物性変換を実現した。上記の分子設計に基づいて開発した、アルコール基およびアシルアジド基を有するオルソゴナル反応剤は、重合開始剤、モノマー、反応点導入剤として働き、ポリエステルおよびポリウレタンの重合後の反応と機能化・複合化に有用であることが分かった。本研究の成果は、簡便な手法によるプラスチック材料の機能化・多用途化を可能にすることから、環境負荷低減・生産コスト低減に繋がると期待される。