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Investigation of the complexation behavior of polyethylene oxide with surfactant ternary mixture: Conductometry
Author(s) -
Begum Mehnaz,
Bibi Irum,
Bibi Saira,
Khan Muhammad Fiaz,
Shah Muzafar,
Bibi Nadia,
Hussain Shah Syed Waqar
Publication year - 2021
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.4173
Subject(s) - chemistry , ternary operation , ethylene oxide , ammonium bromide , pulmonary surfactant , conductometry , adsorption , gibbs free energy , inorganic chemistry , polymer , ternary numeral system , oxide , chemical engineering , vesicle , molecule , membrane , organic chemistry , thermodynamics , biochemistry , physics , computer science , engineering , copolymer , programming language , phase (matter)
Abstract In binary system consisting only of the oppositely charged surfactants, a single type of aggregates (mostly probably vesicles) was identified. Upon polymer addition, a shift in aggregation concentration was observed; however, no additional clustering occurred and single inflection point was visible in all property versus concentration plots. The binding behavior in ternary mixtures comprising of poly (ethylene oxide), sodium dodecyl sulfate, and acetyl trimethyl ammonium bromide has been studied by using conductivity. The aggregation and binding phenomena were thermodynamically feasible, unraveled by the negative values of Gibbs free energy. An increased amount of adsorbed poly (ethylene oxide) caused an increase in these values, showing an alteration in interfacial free energy due to release of water molecules from vesicles' surface. The area per molecule calculated for ternary system indicted the existence of compact packing in mixed clusters.