Effect of Solvent Composition on Protonation Constants of Some Glycine Dipeptides

2014 ◽  
Vol 43 (6) ◽  
pp. 1156-1166 ◽  
Author(s):  
Pınar Esra Erden ◽  
Nazife Aslan ◽  
Alev Doğan ◽  
Esin Canel ◽  
Esma Kiliç
Keyword(s):  
Solvent Composition ◽  
Protonation Constants ◽  
Effect Of Solvent

scholarly journals Effect of solvent composition on the critical micelle concentration of sodium deoxycholate in ethanol-water mixed solvent media

BIBECHANA ◽  
2012 ◽  
Vol 9 ◽  
pp. 63-68 ◽  
Author(s):  
Ajaya Bhattarai ◽  
Sujit Kumar Shah ◽  
Ashok Kumar Yadav ◽  
Janak Adhikari
Keyword(s):  
Critical Micelle Concentration ◽  
Precise Measurement ◽  
Mixed Solvent ◽  
Volume Fraction ◽  
Pure Water ◽  
Specific Conductivity ◽  
Sodium Deoxycholate ◽  
Solvent Composition ◽  
Effect Of Solvent

The precise measurement of the specific conductivity of sodium deoxycholate in pure water and ethanolwater mixed solvent media containing 0.10 and 0.20 volume fraction of ethanol at 303.15 K are reported. The concentration were varied from ~ 0.01 mol L-1 to ~ 0.0002 mol L-1.The conductivity of sodium deoxycholate decreases with the increase in the volume fraction of ethanol. The critical micelle concentration of sodium deoxycholate increases with the increase in the volume fraction of ethanol. DOI: http://dx.doi.org/10.3126/bibechana.v9i0.7176 BIBECHANA 9 (2013) 63-68

Effect of solvent composition on the van’t Hoff enthalpic curve using amylose 3,5-dichlorophenylcarbamate–based sorbent

2017 ◽  
Vol 1515 ◽  
pp. 179-186 ◽  
Author(s):  
Ang-Yeh Lin ◽  
Kai-Tse Cheng ◽  
Sin-Chang Chen ◽  
Hung-Wei Tsui
Keyword(s):  
Solvent Composition ◽  
Effect Of Solvent

Effect of Solvent on Protonation Equilibria of L-Serine and L-Tryptophan in Ethylene Glycol-Water Mixtures

2021 ◽  
Vol 25 (7) ◽  
pp. 124-129
Author(s):  
Ch. Sudhakar ◽  
Allabakshu Shaik ◽  
M. Ramanaiah ◽  
Ch. Nageswara Rao
Keyword(s):  
Dielectric Constant ◽  
Ethylene Glycol ◽  
Protonation Constants ◽  
Statistical Parameters ◽  
Protonation Equilibria ◽  
Effect Of Solvent ◽  
R Factor ◽  
Chemical Models ◽  
Best Fit ◽  
Skewness And Kurtosis

Protonation equilibria of L-serine and L-tryptophan in varying compositions (0.0-50.0 % v/v) of ethylene glycol-water mixtures were investigated pH-metrically. Titrations were performed at 303.0 K and the ionic strength of the medium was maintained at 0.16 mol L-1 using sodium chloride. The protonation constants have been calculated with the computer program MINIQUAD 75 and are selected based on statistical parameters. The best fit chemical models of the protonation equilibria were based on crystallographic R-factor, χ2, skewness and kurtosis. The protonation constants of L-serine and L-tryptophan change linearly with increasing ethylene glycol content. This is attributed to the dielectric constant of the medium.

scholarly journals Effect of Solvent Composition on the Critical Micelle Concentration of Cetylpyridinium Chloride in Ethanol-Water Mixed Solvent Media

2013 ◽  
Vol 13 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Ajaya Bhattarai ◽  
Sujit Kumar Shah ◽  
Ashok Kumar Yadav
Keyword(s):  
Critical Micelle Concentration ◽  
Room Temperature ◽  
Mixed Solvent ◽  
Volume Fraction ◽  
Science And Technology ◽  
Pure Water ◽  
Specific Conductivity ◽  
Cetylpyridinium Chloride ◽  
Solvent Composition ◽  
Effect Of Solvent

The accurate measurement of the specific conductivity of cetylpyridinium chloride in pure water and ethanol-water mixed solvent media containing 0.10, 0.20, 0.30 and 0.40 volume fraction of ethanol at room temperature are reported. The concentrations were varied from ~ 0.005 mol l-1 to ~ 0.0002 mol l-1.The conductivity of cetylpyridinium chloride decreases with the increase in the volume fraction of ethanol. The critical micelle concentration of cetylpyridinium chloride increases with the increase in the volume fraction of ethanol. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 89-93 DOI: http://dx.doi.org/10.3126/njst.v13i1.7446

Effect of solvent composition of electrospun PLGA fibers on paclitaxel release

2018 ◽  
Vol 33 (11) ◽  
pp. 716-722 ◽  
Author(s):  
Huizhi Chen ◽  
Yuan Siang Lui ◽  
Jianghui Zhao ◽  
Lan Xu ◽  
Lay Poh Tan
Keyword(s):  
Solvent Composition ◽  
Effect Of Solvent
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