Development of the thermosensitive multi-layer gel with a self-folding property -From 2D to 3D-

2015 Fiscal Year Final Research Report

• Project/Area Number: 25410229
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Polymer/Textile materials
• Research Institution: Hiroshima University
• Principal Investigator: IIZAWA Takashi 広島大学, 工学(系)研究科(研究院), 准教授 (60130902)
• Co-Investigator(Kenkyū-buntansha): SAKOHA Shuji 新居浜工業高等専門学校, その他部局等, 校長 (80108232) ; GOTOH Takehiko 広島大学, 工学研究院, 助教 (10274127)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 感温性ゲル / コアーシェル / 複合材料 / 自己折り畳み / 感温特性 / 屈曲－伸長特性 / 平板から立体形成 / 高分子合成

Outline of Final Research Achievements

A core-shell gel film consisting of two different thermosensitive layers was obtained by two-step amidation of poly(acrylic acid)-DBU salt gel film reinforced by poly(vinyl alcohol) with n-propylamine (NNA) and a mixture of NNA and N,N-dimethyl-1,3-propanediamine. When a groove was dug on the surface of the core-shell gel film, the resulting gel film consisted of two parts: trilayer and bilayer structures. The film folded or unfolded at the bilayer part by the difference in the swelling ratio of each layer. When the grooved gel film was optimally-designed, the gel film was able to repeat the deformation between the flat two-dimensional film and a three-dimensional object such as a triangular pyramid in response to water temperature change.

Free Research Field

化学