Polymer design for repeatable adhesion system using by multiple hydrogen-bonding

2016 Fiscal Year Final Research Report

• Project/Area Number: 26410139
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Polymer chemistry
• Research Institution: Kogakuin University
• Principal Investigator: KOBAYASHI Motoyasu 工学院大学, 先進工学部, 教授 (50323176)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 接着 / 界面 / ポリマーブラシ / 水素結合 / 表面グラフト / 濡れ / 制御ラジカル重合 / 表面改質

Outline of Final Research Achievements

Polymer brushes having proton donor and acceptor type functional groups were prepared on silicon wafers by surface-initiated atom transfer radical polymerization of 4-hydroxystyrene (4HS)and 4-vinylpyridine (4VP), respectively. Two silicon wafers, one prepared with a poly(4HS) brush and one with a poly(4VP) brush, were jointed in a 1-cm2 contact area using 5-mL of methanol under a pressure of 120 N at room temperature and successively air-dried to form hydrogen bonds at the brush interface, yielding a lap shear adhesion strength of 843 kPa due to the phenolic OH group with a larger dipole moment. In addition, the adhered specimens smoothly debonded in methanol within 20 min at 298 K. The two separated substrates adhered again with a small amount of methanol. Repeatable adhesion and debonding was successfully achieved by proton donor and acceptor type polymer brushes.

Free Research Field

高分子化学