Slowing Down of the Mutual Diffusion Process Approaching the Liquid/Liquid Coexistence Curve of a Nonionic Surfactant/Deuterium Oxide System:  Study of the System C12E5/D2O

1996 ◽  
Vol 100 (32) ◽  
pp. 13760-13764 ◽  
Author(s):  
Ana Martín ◽  
Markus Lesemann ◽  
Lhoussaine Belkoura ◽  
Dietrich Woermann
Keyword(s):  
Diffusion Process ◽  
Nonionic Surfactant ◽  
Deuterium Oxide ◽  
Coexistence Curve ◽  
Oxide System ◽  
Mutual Diffusion ◽  
System Study ◽  
Slowing Down

Mutual Diffusion Measurements in a Ternary System:  Ionic Surfactant−Nonionic Surfactant−Water at 25 °C

Langmuir ◽  
1998 ◽  
Vol 14 (21) ◽  
pp. 5994-5998 ◽  
Author(s):  
M. Castaldi ◽  
L. Costantino ◽  
O. Ortona ◽  
L. Paduano ◽  
V. Vitagliano
Keyword(s):  
Ternary System ◽  
Nonionic Surfactant ◽  
Mutual Diffusion ◽  
Ionic Surfactant

Aqueous Nonelectrolyte Solutions. Part IX. Enthalpies of Mixing of Water and Deuterium Oxide with Ethylene Oxide

1971 ◽  
Vol 49 (11) ◽  
pp. 1830-1840 ◽  
Author(s):  
D. N. Glew ◽  
Harry Watts
Keyword(s):  
Hydrogen Bonding ◽  
Ethylene Oxide ◽  
Composition Range ◽  
Deuterium Oxide ◽  
Enthalpy Of Mixing ◽  
Water Systems ◽  
Oxide System ◽  
Water Proton ◽  
Oxide Systems ◽  
Enthalpies Of Mixing

Calorimetric enthalpies of mixing have been measured over the whole composition range for the water – ethylene oxide system at 10.75 and 20.00 °C and for the deuterium oxide – ethylene oxide system at 13.45 and 20.00 °C. Less extensive measurements have been made for dilute ethylene oxide solutions in water at 0.6 °C and in deuterium oxide at 4.1 and 7.3 °C. The experimental S-shaped, enthalpy of mixing – composition curves are interpreted in terms of solution hydrogen bonding changes, with particular reference to the hydrogen bonding of water. At low ethylene oxide mole fractions the deuterium oxide systems are more exothermal and at high ethylene oxide mole fractions more endothermal than the corresponding water systems. A good correlation is found between the enthalpy of mixing and the water proton magnetic resonance chemical shift for solutions with greater than 0.55 mol fraction of ethylene oxide.

Thermodynamic slowing down of mutual diffusion in isotopic polymer mixtures

1987 ◽  
Vol 20 (10) ◽  
pp. 2471-2474 ◽  
Author(s):  
P. F. Green ◽  
B. L. Doyle
Keyword(s):  
Mutual Diffusion ◽  
Polymer Mixtures ◽  
Slowing Down

Aqueous nonelectrolyte solutions. Part XV. The deuterium sulfide - deuterium oxide system and the deuterium sulfide D-hydrate

1998 ◽  
Vol 76 (8) ◽  
pp. 1119-1129 ◽  
Author(s):  
Colin W Clarke ◽  
David N Glew
Keyword(s):  
Vapor Pressure ◽  
Gas Phase ◽  
Standard Error ◽  
Deuterium Oxide ◽  
Oxide System ◽  
Maximum Temperature ◽  
Saturation Vapor Pressure ◽  
Quadruple Point ◽  
Sulfide Phase ◽  
Saturation Vapor

The univariant (l1l2g) saturation vapor pressure of liquid deuterium oxide (phase l1) with liquid deuterium sulfide (phase l2) in equilibrium with a gas phase (g) has been measured in a stirred titanium reaction vessel at 19 temperatures from 33.003 to 18.905°C and at total pressures from 2.4500 to 1.7428 MPa. The univariant (hl1g) saturation vapor pressure of deuterium sulfide D-hydrate (phase h) in equilibrium with liquid deuterium oxide and a gas phase has been measured at 58 temperatures from 30.666 to 2.798°C and at pressures from 2.2959 to 0.11629 MPa. The maximum temperature for deuterium sulfide D-hydrate with a gas phase, the invariant quadruple point Q(hl1l2g), has been determined from the cut of the (hl1g) and the (l1l2g) curves at temperature 30.770°C with standard error 0.0043°C and at pressure 2.3263 MPa with standard error 0.00018 MPa. The univariant (s1l1g) equilibrium of D-ice (phase s1) with liquid deuterium oxide and a gas phase containing deuterium sulfide has been measured at 11 temperatures from 3.8061 to 3.4540°C and at pressures between 0.00242 and 0.10542 MPa. The lowest temperature for stability of deuterium sulfide D-hydrate with liquid deuterium oxide, the invariant quadruple point Q(hs1l1g), has been determined directly at 3.3917°C with standard error 0.0009°C and at pressure 0.12364 MPa with standard error 0.000011 MPa. This quadruple point Q(hs1l1g) has also been defined by the cut of the (hl1g) and the (s1l1g) curves at temperature 3.3912°C with standard error 0.0006°C and at pressure 0.12363 MPa with standard error 0.000002 MPa. The deuterium sulfide - deuterium oxide gas mixture, represented by a Redlich-Kwong equation of state, has been used to evaluate the fugacities and compositions of the gaseous and liquid deuterium oxide phases for all equilibria. Raoult's law using fugacities has been used to evaluate the saturation mole fraction of deuterium oxide in liquid deuterium sulfide and the Henry's law constant for deuterium oxide solubility in liquid deuterium sulfide between 33.003 and 18.905°C. Data for the (l1l2g) and (s1l1g) equilibria have been accurately represented by simple two-parameter equations. Data for the (hl1g) equilibrium have required a model with seven significant parameters for proper representation betweem 30.666 and 2.798°C.Key words: deuterium sulfide - deuterium oxide system, clathrate D-hydrate of deuterium sulfide, deuterium sulfide D-hydrate stability, freezing of deuterium oxide - deuterium sulfide, phase equilibria of deuterium sulfide - deuterium oxide.

Critical slowing down of nuclear growth along the liquid/liquid coexistence curve

1992 ◽  
Vol 96 (1) ◽  
pp. 859-861 ◽  
Author(s):  
Ch. Ikier ◽  
H. Klein ◽  
D. Woermann
Keyword(s):  
Coexistence Curve ◽  
Critical Slowing Down ◽  
Slowing Down
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