scholarly journals Effects of Concentration, Temperature and Solvent Composition on the Partial Molar Volumes of Sodium Polystyrenesulphonate in Methanol -Water Solvent Media

1970 ◽  
Vol 23 ◽  
pp. 82-88
Author(s):  
Ajaya Bhattarai ◽  
Bijan Das

Precise measurements on the density of sodium polystyrenesulphonate solutions in methanol-water mixed solvent media containing 8, 16, and 25 weight per cent of methanol at 308.15, 318.15, and 323.15 K are reported. The degree of substitution of sodium polystyrenesulphonate used is 1, and the concentrations are varied from 1×10-2 to 3.8 ×10-2 monomol.l-2. The results showed a slight increase on (V0) were determined. the partial molar volumes with increasing polyelectrolyte concentration. The partial molar volumes of the polyelectrolyte at infinite dilution, (effects of the  temperature and solvent composition on the partial molar volumes are also investigated.Keywords: Sodium polystyrenesulphonate, polyion, partial molar volume.DOI: 10.3126/jncs.v23i0.2100Journal of Nepal Chemical Society, Vol. 23, 2008/2009 Page: 82-88 

1970 ◽  
Vol 24 ◽  
pp. 24-30 ◽  
Author(s):  
Sujit Kumar Shah ◽  
Ajaya Bhattarai ◽  
Ghanashyam Shrivastav ◽  
Sujeet Kumar Chatterjee

The author Ajay Bhattarai was changed to Ajaya Bhattarai and the author Kumar Chatterjee was changed to Sujeet Kumar ChatterjeePrecise measurements on the density of cetyltrimethylammonium bromide solutions in pure water and in methanol(1) + water (2) mixed solvent media containing 0.10, 0.20 and 0.30 volume fractions of methanol at 308.15, 318.15 and 323.15 K are carried out to calculate the partial molar volumes. The concentrations are varied from 0.3 - 1.0 x 10-1 mol.l-1. The results showed almost constant on the partial molar volumes with increasing surfactant concentration. Also, the partial molar volumes are found to increase with increasing temperature over the entire concentration range investigated in a given mixed solvent medium and these values are found to decrease with increasing methanol content in the solvent composition. Keywords: Mixed solvent; Cetyltrimethylammonium bromide; Surfactan; Partial molarDOI: 10.3126/jncs.v24i0.2383 Journal of Nepal Chemical Society, Vol. 24, 2009 Page: 24-30


Author(s):  
Jorge Álvarez Juliá ◽  
María Del Carmen Grande ◽  
Carmen Raquel Barrero ◽  
Carlos Miguel Marschoff

1987 ◽  
Vol 19 (5) ◽  
pp. 555-559 ◽  
Author(s):  
Hidenori Itsuki ◽  
Seiji Terasawa ◽  
Kazuaki Shinohara ◽  
Hiroshi Ikezawa

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