@article{oai:kokushikan.repo.nii.ac.jp:00013432, author = {西岡, 義仁 and Nishioka, Yoshihito and 吉見, 岳久 and Yoshimi, Takehisa and 名越, 篤史 and Nagoe, Atsushi and 本波, 裕美 and Honnami, Hiromi and 清田, 馨 and Kiyota, Kaoru and 柳川, 昭久 and Yanagawa, Akihisa and 藤森, 裕基 and Fujimori, Hiroki}, journal = {国士舘大学理工学部紀要, TRANSACTIONS OF THE KOKUSHIKAN UNIVERSITY SCHOOL OF SCIENCE AND ENGINEERING}, month = {Nov}, note = {J-GLOBAL : 201601009905744233, J-GLOBAL : 200901033436776040, Freezing/melting behavior of water in water-electrolyte binary solutions confined within mesoporous silica pores was investigated by differential scanning calorimetry DSC measurements. Fusion temperature Tfus of water in confined solutions decreased linearly with decrease of the logarithm of molar fraction of water in the solution ln (x_{water}), which is a typical behavior of freezing point depression. Molar entropy of fusion for the pore water Δ_{fus}S_{m,pore} was derived from the slope of the linearity, and was compared with entropy difference between those of bulk solid and bulk liquid Δ_{s-l}S_{m,nulk}. We found that pore walls do not affect structural features of water locating in an internal part of the pore through a formation of a non-freezing molecular layer locating on an interfacial part of the pore. メソポーラスシリカ細孔中に封じた電解質水溶液中の水の結晶化・融解挙動を示差走査熱量計(DSC)によって調査した。細孔内の水溶液中の氷の融点は,水のモル分率の対数ln(x_{water})の低下に対し,ほぼ直線的に低下し,理想的な凝固点降下挙動を示した。その傾きからモル融解エントロピーΔ_{fus}S_{m,pore}を導出した。また,バルクにおける固相-液相間のエントロピー差Δ_{s-l}S_{m,nulk}と比較し,細孔に封じたことによる液体相への熱力学的影響を明らかにすることを試みた。その結果,細孔内の水は,界面に界面水層を形成することで,内部の水に細孔壁の影響を及ぼさないことがわかった。, application/pdf}, pages = {91--96}, title = {メソポーラスシリカ細孔中の水 : 電解質系の結晶化・融解挙動}, volume = {11}, year = {2017}, yomi = {ニシオカ, ヨシヒト and ヨシミ, タケヒサ and ナゴエ, アツシ and ホンナミ, ヒロミ and キヨタ, カオル and ヤナガワ, アキヒサ and フジモリ, ヒロキ} }