Formulation of a dynamically correlated network model and investigations of dynamics in ultrathin polymer films

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05615
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 35020:Polymer materials-related
• Research Institution: University of Fukui
• Principal Investigator: Sasaki Takashi 福井大学, 学術研究院工学系部門, 教授 (50242582)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ガラス転移 / 動的相関領域 / シミュレーション / 高分子超薄膜 / 過冷却液体

Outline of Final Research Achievements

It is generally known that nano-sized polymeric materials such as ultrathin films, nanoparticles, and nanofibers exhibit characteristic thermal and mechanical properties that are different from those of bulk materials. The purpose of this study is to elucidate the origins of these anomalous properties based on a novel model, dynamically correlated network model that was developed originally. The predictions from the model were revealed to be compatible with experimental data for various materials. Furthermore, the model was arranged to be applied to freestanding ultrathin films, and it was found that the arranged model can predict successfully the thermal properties of ultrathin films.

Free Research Field

高分子材料の物性

Academic Significance and Societal Importance of the Research Achievements

ガラス形成材料の熱物性について本研究で構築されたネットワーク状動的相関領域の考えは、今後のソフトマターの基礎物性の学術研究の発展に大きく寄与する。さらに、この考えを超薄膜の熱物性に適用することによって得られた知見は、ナノサイズの高機能性材料の物性研究の発展に大きく貢献すると期待される。これらは将来的には、種々の電子デバイスや医療分野などナノテクノロジーのさまざまな応用展開にもつながる。