Thermodynamic properties of mixtures of alkanes differing in chain length. I. Heats of mixing

2010 ◽  
Vol 69 (8) ◽  
pp. 949-970 ◽  
Author(s):  
J. H. van der Waals ◽  
J. J. Hermans
Keyword(s):  
Thermodynamic Properties ◽  
Chain Length ◽  
Heats Of Mixing

Heat capacities and volumes in aqueous polymer and polymer–surfactant solutions

1987 ◽  
Vol 65 (5) ◽  
pp. 990-995 ◽  
Author(s):  
Gérald Perron ◽  
Josée Francoeur ◽  
Jacques E. Desnoyers ◽  
Jan C. T. Kwak
Keyword(s):  
Thermodynamic Properties ◽  
Chain Length ◽  
Polymer Concentration ◽  
Heat Capacities ◽  
Aqueous Mixtures ◽  
Alkyltrimethylammonium Bromides ◽  
Aqueous Polymer ◽  
Surfactant Interactions ◽  
Polymer Surfactant ◽  
Polymer Interaction

The apparent molar volumes and heat capacities of aqueous mixtures of neutral polymers and ionic surfactants were measured at 25 °C. The polymers chosen were poly(vinylpyrrolidone) (PVP) and poly(ethyleneoxide) (PEO) and the surfactants were the C8, C10, and C12 homologs of sodium alkylsulfates and the C10, C12, and C16 homologs of alkyltrimethylammonium bromides. The polymer–surfactant interactions depend on the nature of both components and on the chain length of the surfactant. The thermodynamic properties of the cationic surfactants are essentially the same in the absence and presence of polymer indicating little surfactant–polymer interaction. On the other hand, the thermodynamic properties of anionic surfactants are shifted, upon the addition of polymers, in the direction of enhanced hydrophobic association. The effect increases with the surfactant chain length and with the polymer concentration. The effect is larger with PVP than with PEO.

Micellisation and thermodynamic properties of sodium dodecyl sulphate in water-1,2-alkanediol co-solvents: chain length effect

2014 ◽  
Vol 53 (3) ◽  
pp. 376-389 ◽  
Author(s):  
Grace Olufunmilayo Ogunlusi ◽  
Oluwatobi Victor Bamgboye ◽  
Oludare Oluyemi Alo ◽  
Olanrewaju Owoyomi
Keyword(s):  
Thermodynamic Properties ◽  
Chain Length ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Length Effect

Chain length dependence of the thermodynamic properties of linear and cyclic alkanes and polymers

2005 ◽  
Vol 122 (8) ◽  
pp. 084907 ◽  
Author(s):  
Dinghai Huang ◽  
Sindee L. Simon ◽  
Gregory B. McKenna
Keyword(s):  
Thermodynamic Properties ◽  
Chain Length ◽  
Length Dependence ◽  
Cyclic Alkanes

Thermodynamic properties of binary liquid mixtures

1976 ◽  
Vol 54 (14) ◽  
pp. 2280-2282 ◽  
Author(s):  
Murari Venkata Prabhakara Rao ◽  
Puligundla Ramachandra Naidu
Keyword(s):  
Statistical Theory ◽  
Thermodynamic Properties ◽  
Binary Mixtures ◽  
Binary Systems ◽  
Liquid Mixtures ◽  
Excess Volumes ◽  
Diethyl Ketone ◽  
Binary Liquid ◽  
The Third ◽  
Heats Of Mixing

Excess volumes of the three binary mixtures: (1) cyclohexane – diethyl ketone, (2) cyclohexane–benzonitrile, and (3) toluene–benzonitrile have been measured at 303.15 K using a dilatometer. Excess volumes of the first two systems are positive over the whole range of composition and are negative for the third system. The measured excess volumes and the excess heats of mixing reported in the literature for the three binary systems have been analysed in the light of the statistical theory of liquid mixtures developed by Flory. The analysis has shown that the theory in its modified form is approximately applicable to the mixtures cyclohexane–diethylketone and cyclohexane–benzonitrile.

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