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Effect of Various Electrolytes on the Phase Separation and Thermodynamic Properties of p‐Tert‐Alkylphenoxy Poly (Oxyethylene) Ether in the Absence/Presence of Drugs
Author(s) -
Khan Muhammad Akhlaqur Rahman,
Amin Md. Ruhul,
Mahbub Shamim,
Alam Md. Masud,
Rub Malik Abdul,
Hoque Md. Anamul,
Khan Mohammed Abdullah,
Asiri Abdullah M.
Publication year - 2019
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1002/jsde.12248
Subject(s) - chemistry , aqueous solution , cloud point , enthalpy , electrolyte , ether , sodium sulfate , salt (chemistry) , phase (matter) , standard molar entropy , standard enthalpy of formation , pulmonary surfactant , inorganic chemistry , chromatography , analytical chemistry (journal) , thermodynamics , sodium , organic chemistry , physics , electrode , biochemistry
Cloud point (CP) measurements of 4‐(1,1,3,3‐tetramethylbutyl) phenyl‐polyethyleneglycol (Triton X‐100 (TX‐100)) were performed in aqueous solution in the presence of drug Amikacin sulfate (AS)/Neomycin sulfate (NS)/(AS/NS+ different inorganic salts). In aqueous solution, the CP values of TX‐100 first decrease with increasing concentration and then increase with increasing surfactant concentration. The CP values of TX‐100 solutions were found to increase with the increasing concentration of the AS/NS drug. The CP values of TX‐100‐AS/NS mixtures were also observed to decrease with the increase of the concentration of salt. Different thermodynamic parameters such as standard free energy ( Δ G c 0 ), standard enthalpy ( Δ H c 0 ) as well as the standard entropy ( Δ S c 0 ) change of phase separation were calculated and discussed in relation to molecular interactions.