Micellization behavior of cationic and anionic surfactant mixtures at different temperatures: Effect of sodium carbonate and sodium phosphate salts

Sodium-doped CPP was synthesized using three dopant sources (sodium carbonate, sodium hydroxide and sodium phosphate). These materials were analyzed by XRD to determine phase composition and by differential thermal analysis to identify phase transition temperatures. Sintering of resulting glass powders showed that both dopant source and dopant concentration affects sinter neck formation and crystallinity. The open porosity of sodium phosphate and sodium carbonate doped samples at 0.1 Na2O/CaO sintered at different temperatures changed significantly. Crystallization of the construct during sintering was noted at temperatures lower than expected.

Download Full-text

Effect of sodium phosphate salts on the thermodynamic properties of aqueous solutions of poly(ethylene oxide) 6000 at different temperatures

The Journal of Chemical Thermodynamics ◽

10.1016/j.jct.2008.05.007 ◽

2008 ◽

Vol 40 (9) ◽

pp. 1364-1377 ◽

Cited By ~ 32

Author(s):

Rahmat Sadeghi ◽

Rahim Hosseini ◽

Bahman Jamehbozorg

Keyword(s):

Thermodynamic Properties ◽

Ethylene Oxide ◽

Aqueous Solutions ◽

Sodium Phosphate ◽

Different Temperatures ◽

Poly Ethylene Oxide ◽

Poly Ethylene ◽

Phosphate Salts

Download Full-text

Volumetric and viscosity studies of interactions between sodium phosphate salts and poly(propylene glycol) 400 in aqueous solutions at different temperatures

Fluid Phase Equilibria ◽

10.1016/j.fluid.2009.06.016 ◽

2009 ◽

Vol 284 (2) ◽

pp. 86-98 ◽

Cited By ~ 12

Author(s):

Rahmat Sadeghi ◽

Bahman Jamehbozorg

Keyword(s):

Aqueous Solutions ◽

Propylene Glycol ◽

Sodium Phosphate ◽

Different Temperatures ◽

Poly Propylene ◽

Phosphate Salts

Download Full-text

Synthesis of Nano-sized Nickel Particles by a Bottom-up Approach in the Presence of an Anionic Surfactant and a Cationic Polymer

Journal of Scientific Research ◽

10.3329/jsr.v2i2.3261 ◽

2010 ◽

Vol 2 (2) ◽

pp. 313-321 ◽

Cited By ~ 12

Author(s):

K. M. A. Haque ◽

M. S. Hussain

Keyword(s):

Anionic Surfactant ◽

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl ◽

Cationic Polymer ◽

Sem Images ◽

Bottom Up ◽

Nonionic Polymer ◽

Tem Characterization ◽

Nickel Particles ◽

Different Temperatures

Nano-sized nickel particles have been synthesized by a bottom-up approach, using hydrazine as the reducing agent in the presence of an anionic surfactant - sodium-dodecyl sulphate (SDS). The effect of adding a nonionic polymer -polyvinylpyrrolidone (PVP) with an anionic surfactant has been studied at two different temperatures; the rate of reduction increased as the reaction temperature was increased from 60 to 100°C. These nano-aggregated nickel particles were characterized by using SEM with EDX facilities and TEM. TEM characterization showed the presence of spherical Ni particles as fine as 10nm in diameter. However, the SEM images showed a very spiky morphology, very small spherical shaped objects were clearly observed within these spiky structures. The combination of SDS/PVP reaction produced nano-sized nickel particles which were much finer than the reactions where SDS was used on its own. PVP has shown some dispersion power, and was found to be capable of preventing nickel particles from gradual agglomeration. Keywords: Bottom-up; SDS; PVP; 10 nm. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI:10.3329/jsr.v2i2.3261 J. Sci. Res. 2 (2), 313-321 (2010)

Download Full-text