Phospholipid monolayers at non-polar oil/water interfaces. Part 3.—Effect of chain length on phase transitions in saturated di-acyl lecithins at the n-heptane/aqueous sodium chloride interface

1982 ◽  
Vol 78 (2) ◽  
pp. 323 ◽  
Author(s):  
James Mingins ◽  
J. A. Gordon Taylor ◽  
Brian A. Pethica ◽  
Craig M. Jackson ◽  
Beatrice Y. T. Yue
Keyword(s):  
Phase Transitions ◽  
Sodium Chloride ◽  
Chain Length ◽  
Aqueous Sodium ◽  
Phospholipid Monolayers ◽  
Oil Water ◽  
Polar Oil

Nature of the oil/water interface and equilibrium surfactant aggregates in systems exhibiting low tensions

1988 ◽  
Vol 66 (12) ◽  
pp. 3031-3037 ◽  
Author(s):  
Robert Aveyard ◽  
Bernard P. Binks ◽  
Thomas A. Lawless ◽  
Jeremy Mead
Keyword(s):  
Molecular Structure ◽  
Sodium Chloride ◽  
Water Interface ◽  
Rich Phase ◽  
Aqueous Sodium ◽  
Interfacial Tensions ◽  
Aerosol Ot ◽  
Surfactant Aggregates ◽  
Monolayer Adsorption ◽  
Oil Water

Oil/water interfacial tensions are reported for systems containing pure alkane, aqueous sodium chloride, and a pure anionic surfactant, either Aerosol OT or p-dihexylbenzene sodium sulphonate (DHBS). Evidence is produced to support the claim that monolayer adsorption at the oil/water interface can produce ultralow tensions (~ 1 µN m−1), and that the presence at the interface of a third, surfactant-rich phase is not necessary. The aggregation of DHBS and its distribution between oil and aqueous phases of various salinities have been investigated. It has been confirmed that the behaviour of DHBS in these respects is similar to that of Aerosol OT, as might be expected from its molecular structure. The sizes of microemulsion droplets in equilibrium with planar adsorbed monolayers have been determined, and related to the tensions of the plane oil/aqueous phase interfaces using simple existing theory.

scholarly journals Effect of the metallicity on the capacitance of gold–aqueous sodium chloride interfaces

2021 ◽  
Vol 155 (4) ◽  
pp. 044703
Author(s):  
Alessandra Serva ◽  
Laura Scalfi ◽  
Benjamin Rotenberg ◽  
Mathieu Salanne
Keyword(s):  
Sodium Chloride ◽  
Aqueous Sodium

Environmental Effects of Sulfur and Sulfur Compounds on the Resistance to Stress Corrosion Cracking of AISI 4340 Steel in Aqueous Chloride Solutions

CORROSION ◽  
1969 ◽  
Vol 25 (8) ◽  
pp. 342-344 ◽  
Author(s):  
A. TIRMAN ◽  
E. G. HANEY ◽  
PAUL FUGASSI
Keyword(s):  
Sodium Chloride ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Prior Treatment ◽  
Aisi 4340 Steel ◽  
Aqueous Sodium ◽  
4340 Steel ◽  
Resistance To Stress ◽  
Aisi 4340

Abstract The resistance to stress corrosion cracking of AISI 4340 steel foil in 0.6M aqueous sodium chloride, acidified to pH 1.5 with hydrochloric acid, is greatly decreased by prior treatment of the specimens for short periods of time with aqueous and nonaqueous solutions of sulfur, organic and inorganic sulfides, sulfur dioxides, and the inorganic salts of sulfurousand sulfuric acids. It is suggested that this prior treatment produces sulfided areas which are inhibitors of the combination of atomic hydrogen into molecular hydrogen. The decreased resistance to stress corrosion cracking is thus attributed to hydrogen embrittlement. If the stress corrosion cracking test is made in 0.6M aqueous sodium chloride, adjusted to an initial pH of 8, the effect of a prior sulfiding treatment is small. The formation of such sulfided areas in practice result from the exposure of 4340 steels to industrial atmospheres which may contain hydrogen sulfide, sulfur dioxide, and elemental sulfur.

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