Netsu Sokutei, 29 (3), p. 115, (2002)

解説

非平衡操作による分子アロイの形成

Formation of Molecular Alloys by Non-equilibrium Processing

近年高まりつつある種々の非平衡操作の開発と,得られる非平衡凍結状態の熱力学的性質を論じた。とりわけ結晶粉砕による非晶化は,分子性結晶に対しては一成分系でも可能な場合があり,それらを適切に組み合わせた二成分系では全組成域にわたって非晶性分子アロイを作ることができた。一成分系で全く非晶化しない系でも,適当な結晶と混合して粉砕すれば,部分的組成にわたって分子アロイが生成する実例を挙げ,医薬品への応用の可能性を論じた。
TMan has used some of his materials in non-equilibrium state for a long time. Glasses are typical example of substances in frozen-in disordered state which was realized by non-equilibrium processing. Thermodynamic characterization of molecular glasses was described briefly. Formation of non-crystalline solids by various kinds of non-equilibrium processing other than the traditional liquid cooling was discussed. Solid-state vitrification by mechanical milling and formation of molecular alloys for some binary systems were described with potential application to pharmaceuticals.