Fabrication of functional film with thermo-responsive nanocylinder-channels induced by liquid-crystal orientation

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K21210
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials; Polymer/Textile materials
• Research Institution: Kochi University
• Principal Investigator: Hadano Shingo 高知大学, 教育研究部総合科学系複合領域科学部門, 講師 (70397157)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 両親媒性ブロックポリマー / サーモトロピック液晶 / ミクロ相分離構造 / 垂直配向シリンダー / ナノチャネル / 温度応答性ポリマー / 架橋 / 透過膜

Outline of Final Research Achievements

We synthesized various block copolymers consisting of PNIPAM to form thermo-responsive nanocylinder channels and PMA(LC) acts as a film-matrix and as a director of PNIPAM cylinder domains through the thermotropic liquid-crystal orientation, and explored suitable film-preparation conditions for the film to form a perpendicularly oriented cylinder microphase separation structure.
In diblock copolymer film, PNIPAM-b-PMA(LC), a targeted structure was obtained by addition of a little amount of water to the polymer solution in film-preparation. In triblock terpolymer, poly(ethylene oxide)-b-PNIPAM-b-PMA(LC), it would be suggested that a targeted structure was obtained by just thermal annealing.
To obtain a self-standing film, we introduced thermal- or photo-crosslinkable part in PMA(LC) and investigated their crosslinking ability. As a result, a self-standing film successfully obtained through photo-crosslink reaction.

Free Research Field

高分子化学、材料化学