Polymer Function Based on Hierarchical Dynamics at Non-equilibrium Interfaces

2014 Fiscal Year Final Research Report

• Project/Area Number: 24350061
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Polymer chemistry
• Research Institution: Kyushu University
• Principal Investigator: TANAKA Keiji 九州大学, 工学(系)研究科(研究院), 教授 (20325509)
• Co-Investigator(Kenkyū-buntansha): MATSUNO Hisao 九州大学, 工学(系)研究科(研究院), 准教授 (50376696) ; ODA Yukari 九州大学, 工学(系)研究科(研究院), 特任助教 (20625595)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 高分子 / 液体界面 / 分子鎖熱運動性 / 界面選択分光

Outline of Final Research Achievements

At the outermost surface, aggregation states of polymers generally tend to alter to their most stable ones in response to their surrounding environment. Such could be attained even at a temperature being much lower than the bulk glass transition temperature. Chains at the outermost region are in part dissolved in the liquid phase and/or swollen due to the sorption of liquid molecules. Combining various surface sensitive experimental techniques, we have found that there exists the mobility gradient along the direction normal to the interface. The α process arisen form the segmental motion in the interfacial region is faster than the bulk β process at a given temperature. The extent of the surface reorganization might be explained in terms of the interfacial energy. Regulating the polymer mobility at the interface, the platelet adhesion on the polymer film can be controlled.

Free Research Field

高分子化学