6. 不均一系の凍結機構に関する考察(昭和58年度第29回凍結及び乾燥研究会特別講演及び研究報告)

概要

論文の詳細を見る
A mechanism of freezing and thawing of aqueous solutions compartmentalized by a cross-link structure of a hydrophilic polymer was investigated by using low-temperature DSC. In an adequately small pore formed by a cross-linked dextran were aqueous solutions of glycerol, glucose, sucrose, sodium chloride and tetraalkylammoniumbromides (alkyl=methyl, ethyl, n-propyl and n-butyl), having been used in this experiment, confined by the compartmentalization, they remained unfrozen during freezing which was indicated by recrystallization phenomena during the subsequent thawing. Recrystallization can be ascribed to ice formation in some cases, and ice and eutectic formations in other cases according to the relative position of a recrystallization temperature and an eutectic point of each solution. Recrystallization due to clathrate hydrate formation was also observed when a tetra-n-butylammoniumbromide solution was compartmentalized.
低温生物工学会の論文
1983-08-25