Studies of solubilized micellar solutions. Pt. 1. Phase studies and particle size analysis of solutions formed with nonionic surfactants

Journal Article · Fri Feb 01 00:00:00 EDT 1974 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(74)90008-3· OSTI ID:6733915

Attwood, D; Currie, L R.J.; Elworthy, P H

The preparation and physical properties of oil/water solubilized micellar solutions (so-called microemulsions) containing liquid paraffin, glycerol, water, and blends of Tween 60 and Span 80 have been examined. Turbidity-spectra methods of particle sizing have shown that an increase of temperature of preparation over the range 25 to 80/sup 0/C led to a gradual decrease in the modal diameter and the half-width of the size distribution curve. Phase diagram studies on micellar solutions prepared at 70/sup 0/C have indicated a pronounced dependence of the area of existence of clear solutions on the ratio of Tween to Span in the system and on the oil content. Light-scattering investigations on these systems have indicated micelle diameters of between 13 and 45 nm. In general, micellar size was increased by increasing the oil content and by decreasing the surfactant/glycerol ratio. No significant effect on micellar diameter was detected as the Tween/Span molar ratio was varied between 1.0 and 1.6. (12 refs.)

• Research Organization: Manchester Univ
• OSTI ID: 6733915
• Journal Information: J. Colloid Interface Sci.; (United States), Vol. 46:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
MICROEMULSIONS
CHEMICAL COMPOSITION
PHASE STUDIES
EVALUATION
MEDIUM TEMPERATURE
PARTICLE SIZE
SURFACTANTS
COLLOIDS
DISPERSIONS
EMULSIONS
SIZE
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
360602 - Other Materials- Structure & Phase Studies