查詢結果分析
相關文獻
- Thermodynamic Behavior and Collapse Kinetics of Mixed DPPC/n-Hexadecanol Monolayers at the Air/Water Interface
- An Examination on the Adsorption Kinetics of 1-Decanol at Air-Water Interface
- 半導體工業空氣中揮發性有機化合物之分析
- 斜張橋之三維氣彈穩定分析
- 氣渦輪機使用液態空氣之進口空氣冷卻系統
- Cool Thermal Discharge with Time-Velocity Variation of Flowing Air in Situ Contact on Water Surface
- 國內排煙脫硫系統性能評鑑
- Dynamic Response of a Spinning Disk Coupled with a Moving Beam System Subjected to Impulsive Excitation
- 鍋爐熱傳設計概論(4)--空氣預熱器設計
- 文氏洗滌塔操作維修與故障排除
頁籤選單縮合
題 名 | Thermodynamic Behavior and Collapse Kinetics of Mixed DPPC/n-Hexadecanol Monolayers at the Air/Water Interface=在空氣/水界面上的DPPC/正十六碳醇混合單分子層的熱力學行為及崩潰動力 |
---|---|
作 者 | 陳凱斌; 張鑑祥; 楊毓民; 馬哲儒; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 27:6 1996.11[民85.11] |
頁 次 | 頁455-464 |
分類號 | 341.3453 |
關鍵詞 | 空氣; 水界面; DPPC/正十六碳醇混合單分子層; 熱力學行為; 崩潰動力; Air/water interface; Collapse mechanism; Lung surfactants; Mixed monolayer; Relaxation; |
語 文 | 英文(English) |
中文摘要 | 本研究乃探討在空氣/水界面之DPPC/正十六碳醇混合單分子層的熱力學行為及崩潰動力。利用電腦控制的膜壓測量裝置,量得在15°c,25°C及37°C下,DPPC/正十六碳醇混合單分子層的表面壓-每分子佔據面積等溫線。分析結果顯示,在不同的表面壓及組成下,混合單分子層的分子佔據面積與理想混合情形比較,皆呈現明顯的負偏差。由過剩混合自由能的變化,發現皆DPPC的莫耳分率為0.5時,混合單分子層最穩定的狀態。利用在崩潰點時,表面壓隨時間變化之鬆弛曲線的量測,探討此一混合單分子層在15-37°C間的崩潰動力。結果顯示其崩潰過程可以利用一包括兩階段的成核及成長機制來描述。第一階段遵循Prout-Tompkins模式,第二階段則遵循類似二次反應的動力模式。 |
英文摘要 | The thermodynamic behavior and collapse kinetics of mixed DPPC/n-hexadecanol monolayers at the air/water interface were studied. Surface pressure-area isotherms were obtained for mixed DPPC/n-hexadecanol monolayers at 15°C, 25°C, and 37°C by using a computer-controlled film balance. The analysis indicated that, at all surface pressures and compositions, the areas of monolayers exhibited significant negative deviations from the ideal values. Excess free energy changes of mixing had been calculated and the most stable state of the mixed monolayer with xDPPC=0.5 was found. The collapse kinetics of the mixed monolayers in the temperature range of 15-37°C was investigated by the relaxation measurements of the surface pressure at the collapse point as a function of time. It was shown that the collapse process which occurred in two stages can be represented by a nucleation and growth mechanism. The first stage is described by the Prout-Tompkins law and the second stage is described by a second order kinetic law. |
本系統中英文摘要資訊取自各篇刊載內容。