scholarly journals Solvation Study of Neem Oil in Aqueous Sodium Dodecyl Sulphate at different Temperatures

2017 ◽  
Vol Volume-2 (Issue-1) ◽  
pp. 652-661
Author(s):  
P. seethalakshmi ◽  
K. Renuka Devi ◽  
R.Seema | J. Benazir Jiya ◽  
Keyword(s):  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Neem Oil ◽  
Aqueous Sodium ◽  
Different Temperatures

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

2010 ◽  
Vol 2 (2) ◽  
pp. 313-321 ◽  
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) 

scholarly journals The electrical conductivities of aqueous solutions of sodium dodecyl sulphate and sodium hexadecyl sulphate at different temperatures

1936 ◽  
Vol 155 (885) ◽  
pp. 386-406 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Molecular Weight ◽  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Classical Work ◽  
Electrical Conductivities ◽  
Other Substances ◽  
Different Temperatures ◽  
Great Advance

The classical work of McBain on the electrical conductivity and other properties of aqueous solutions of the soaps led him to postulate the formation of the ionic micelle. This aggregate of ions has a greater mobility than that of the ions composing it, and its formation accounts for the characteristic increase in conductivity exhibited by colloidal electrolytes. The conception has resulted in great advance in the study of all classes of colloidal electrolytes e. g ., protein and gelatine salts, dyes, and other substances of high molecular weight.

Interaction of Some Amino Acids with Sodium Dodecyl Sulphate in Aqueous Solution at Different Temperatures

2011 ◽  
Vol 66 (5) ◽  
pp. 345-352
Author(s):  
Anwar Ali ◽  
Firdoos Ahmad Itoo ◽  
Nizamul Haque Ansari
Keyword(s):  
Amino Acids ◽  
Molar Volume ◽  
Sodium Dodecyl Sulphate ◽  
Apparent Molar Volume ◽  
Sodium Dodecyl ◽  
Partial Molar Volumes ◽  
Molar Refraction ◽  
Viscosity Data ◽  
Different Temperatures ◽  
Experimental Values

The density ρ, and viscosity η of 0.00, 0.05, 0.10, 0.15, and 0.20 mol kg−1 glycine (Gly), dlalanine (Ala), dl-serine (Ser), and dl-valine (Val) have been measured in 0.002 mol kg−1 aqueous sodium dodecyl sulphate (SDS) at 298.15, 303.15, 308.15, and 313.15 K. These data have been used to calculate the apparent molar volume φv, infinite dilution apparent molar volume φv°, and the standard partial molar volumes of transfer φv° (tr), of the amino acids from water to the aqueous SDS solutions. Falkenhagen coefficient A, Jones-Dole coefficient B, free energies of activation per mole of solvent (aqueous SDS) Δμ1°*, and per mole solute (amino acids) Δμ2°*, also enthalpy ΔH* and entropy ΔS* of activation of viscous flow were evaluated using viscosity data. The molar refraction RD was calculated by using experimental values of the refractive index nD of the systems. The results have been interpreted in terms of ion-ion, ion-polar and hydrophobic-hydrophobic group interactions. The volume of the transfer data suggest that ion-ion intertactions are predominant.

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