Structure of Water and Hydrophobic Bonding in Proteins. IV. The Thermodynamic Properties of Liquid Deuterium Oxide

1964 ◽  
Vol 41 (3) ◽  
pp. 680-689 ◽  
Author(s):  
George Némethy ◽  
Harold A. Scheraga
Keyword(s):  
Thermodynamic Properties ◽  
Deuterium Oxide ◽  
Structure Of Water ◽  
Hydrophobic Bonding

Structure of liquid water. III. Thermodynamic properties of liquid deuterium oxide

1975 ◽  
Vol 79 (22) ◽  
pp. 2352-2361 ◽  
Author(s):  
John C. Owicki ◽  
Barry R. Lentz ◽  
Arnold T. Hagler ◽  
Harold A. Scheraga
Keyword(s):  
Thermodynamic Properties ◽  
Liquid Water ◽  
Deuterium Oxide ◽  
Structure Of Liquid

Thermodynamic properties of cotton dyeing with indigo dyes in non-aqueous media of liquid paraffin and D5

2021 ◽  
pp. 004051752110117
Author(s):  
Jie Fan ◽  
Min Shao ◽  
Junhua Miao ◽  
Junran Ma ◽  
Mingan Hu ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Aqueous Medium ◽  
Adsorption Isotherms ◽  
Liquid Paraffin ◽  
Aqueous Media ◽  
Cotton Fibers ◽  
Bonding Structure ◽  
Indigo Dyes ◽  
Hydrophobic Bonding ◽  
Cotton Dyeing

On the basis of investigation into the dyeing equilibrium of cotton fibers with indigo dyes in decamethylcyclopentasiloxane (D5), liquid paraffin and water, the thermodynamic properties of cotton dyeing with indigo dyes in non-aqueous medium systems were studied in comparison with aqueous dyeing. The main works involved are as follows: firstly, the adsorption isotherms were created; then, the three theoretical adsorption models of Nernst, Langmuir and Freundlich were used to fit the adsorption isotherms created; finally, the thermodynamic parameters were calculated. The results showed that the adsorption isotherms were all in line with the Freundlich model. The order of dyeing affinity was in the sequence: liquid paraffin > D5 > water. The dyeing entropy in the three media showed positive values, which is mainly attributed to the adsorption of both indigo-leuco and water onto cotton fibers, thus reducing the ice-like structure formed among the water molecules in the dyeing system and the hydrophobic bonding structure formed among the non-aqueous medium molecules, then leading to an increase in the system disorder. The dyeing heat in the three media also showed positive values, due mainly to the absorption of thermal energy to “melt” the ice-like structure and to “break” the hydrophobic bonding structure. These dyeing thermodynamic properties are conducive to understanding and interpreting the dyeing performance and behavior of indigo dyes in non-aqueous dyeing systems.

Thermodynamic properties of deuterium oxide in the temperature range from 6 to 350K

2006 ◽  
Vol 38 (7) ◽  
pp. 879-883 ◽  
Author(s):  
N.N. Smirnova ◽  
T.A. Bykova ◽  
K. Van Durme ◽  
B. Van Mele
Keyword(s):  
Thermodynamic Properties ◽  
Deuterium Oxide ◽  
Temperature Range
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