The polymerization of acrylamide in a water/oil cationic microemulsion initiated with a water-soluble radical initiator, potassium persulfate (KPS), was investigated. The kinetics of microemulsion polymerization clearly shows a two-stage process; when the initiator is dissolved in a monomer solution
Formation of Microemulsion: Effect of Temperature and Polyacrylamide
β Scribed by Ajith Cherian John; Animesh Kumar Rakshiti
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 266 KB
- Volume
- 156
- Category
- Article
- ISSN
- 0021-9797
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β¦ Synopsis
The pseudoternary phase diagram of the system involving cyclohexane, sodium dodecyl sulphate, propanol, and water was constructed for an SDS-to-propanol mass ratio 1:2. The area of the monophasic microemulsion region was computed. The effects of change of temperature and change of concentration of watersoluble polyacrylamide (PAA) on the microemulsion zone as well as the conductance, viscosity, and adiabatic compressibility of the microemulsion systems were studied. It was observed that for the water system there is a critical temperature below which the microemulsion zone increases with temperature, though at higher temperature the zone decreases within the range studied. The effects of presence of polyacrylamide above and below (0.003 %(\mathrm{w} / \mathrm{v})) also are different from each other. 1993 Academic Press, Inc.
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Outlines of complex ternary phase diagrams of cetyltrimethyl ammonium bromide/water/CHCl3, cetylpyridinium chloride/water/CHCl3, sodium bisethylhexyl sulfosuccinate/water/CHCl3, and octylphenoxy polyoxyethylene ether/water/CHCl3 systems have been presented. Enthalpies of solution of water-in-oil + a
## Abstract The temperature at which polyacrylamide gels are polymerized strongly affects the structure and physical properties of this matrix. The suggested temperature of 0β4 Β°C has been found to produce highly turbid, highly porous and unelastic gels. At temperature of 25 Β°C of higher, the gels
Acrylamide and N,N-methylenebis(acry1amide) (AAm-Bis) copolymerization has been investigated in water at a monomer concentration of 1.8 w/v %. Conversion of monomer and pendant vinyl groups was measured as a function of the reaction time up to the onset of macrogelation. Experimental results indicat
triangle in whole phase equilibria, we can calculate the mo-Microemulsions are formed over a wide range of temperatures nomeric solubility of oil-soluble surfactant in oil and the in brine / sodium dodecyl sulfate / polyoxyethylene dodecyl ether mixing fraction of the surfactant in surfactant layer