特論講座
ゴム技術者のためのソフトマター物理講座
第4章 拡散・浸透・膨潤
キーワード:
Onsager Principle,
Collective Diffusion,
Self Diffusion,
Gel Swelling and Squeezing,
Multi-component System
2020 年 93 巻 7 号 p. 248-254
詳細
2020 年 93 巻 7 号 p. 248-254
Diffusion, permeation and swelling are the mixing processes of materials. Diffusion is a mixing process of solute and solvent, permeation is a mixing process of liquid and porous media, and swelling of a gel is a mixing process of polymer network and solvent. Here the dynamics of such phenomena is discussed from a general principle called Onsager principle. Onsager principle is a general principle working in many non-equilibrium systems, and the governing equations for diffusion and swelling are derived from this principle.
