Phase and aggregational studies of some inversely soluble aqueous formulations

Citation
Sk. Misra et Ro. Skold, Phase and aggregational studies of some inversely soluble aqueous formulations, COLL SURF A, 179(1), 2001, pp. 111-124
Citations number
31
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN journal
09277757 → ACNP
Volume
179
Issue
1
Year of publication
2001
Pages
111 - 124
Database
ISI
SICI code
0927-7757(20010401)179:1<111:PAASOS>2.0.ZU;2-I
Abstract
The effect of component molecular structure, pH, temperature acid concentra tion on phase and aggregational behaviour of aqueous formulations containin g more than one polydisperse polyglycol ether based compound was studied. T he effect of adding various inversely soluble polymer compounds to base For mulations on surface tension, turbidity, conductivity and pH over a wide ra nge of temperatures and concentrations in water was investigated. A new ins trument, enabling automatic temperature and concentration scans, was used f or the generation of pH. turbidity and conductivity data. It was observed t hat phase behaviour of polyalkylene glycol ethers is dramatically changed b y the presence of surface active components. Results also show that the amo unt and type of polymer has a small effect on the critical micelle concentr ation (CMC) but is critical for the phase behaviour of the investigated for mulations. Molecular weight, hydrophile-lipophile balance (HLB) as well as cloud point values are important parameters which may be varied widely and a proper choice of polyalkylene glycol can be used to affect phase separati on behaviour with respect to desired performance in industrial applications , e.g. as lubricants in metal working fluids. (C) 2001 Elsevier Science B.V . All rights reserved.