Irreversible molecular diffusion of polymers under temperature gradient

2015 Fiscal Year Final Research Report

• Project/Area Number: 24350122
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Polymer/Textile materials
• Research Institution: Tokai University
• Principal Investigator: Kita Rio 東海大学, 理学部, 教授 (90322700)
• Co-Investigator(Kenkyū-buntansha): YAGIHARA SHIN 東海大学, 理学部, 教授 (40191093) ; SHINYASHIKI NAOKI 東海大学, 理学部, 教授 (00266363) ; TANAKA FUMIHIKO 京都大学, 名誉教授 (50107695)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 高分子 / 熱力学 / 非平衡 / ソレー効果 / 分子ダイナミクス / 温度勾配 / レーザ計測 / 溶液物性

Outline of Final Research Achievements

We have studied the diffusion behavior of aqueous solutions of polymers where the solutions are subjected to a stable temperature gradient. A concentration gradient is developed owing to the temperature gradient that is called the Ludwig-Soret effect or thermodiffusion. The reported experimental data of the Ludwig-Soret effect for aqueous systems are not sufficient so far. Thus, we have tried to publish experimental data for various aqueous polymer systems measured by means of a laser holographic method established by our laboratory. We have intended to contribute to the developments of nonequilibrium thermodynamics and polymer physics due to deeper understandings of molecular mechanisms of the Ludwig-Soret effect.

Free Research Field

高分子物理学、非平衡熱力学