A conductometric investigation of hydroxypropylmethyl cellulose/sodium dodecyl sulfate/nonionic surfactant systems | Zendy

Lidija Petrović | Zendy; Verica Sovilj | Zendy; Jadranka Milanović | Zendy; Jaroslav Katona | Zendy

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A conductometric investigation of hydroxypropylmethyl cellulose/sodium dodecyl sulfate/nonionic surfactant systems

Author(s) -

Lidija Petrović,

Verica Sovilj,

Jadranka Milanović,

Jaroslav Katona

Publication year - 2014

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc140321059p

Subject(s) - pulmonary surfactant , chemistry , micelle , sodium dodecyl sulfate , carboxymethyl cellulose , hydroxypropyl cellulose , polymer , poloxamer , aqueous solution , conductometry , critical micelle concentration , nonionic surfactant , cationic polymerization , polysorbate , chemical engineering , ether , hydroxyethyl cellulose , titration , polymer chemistry , organic chemistry , cellulose , sodium , chromatography , copolymer , biochemistry , engineering

Surfactant mixtures are very often used in various cosmetic and pharmaceutical products because they commonly act in synergism and provide more favorable properties than the single surfactants. At the same time, the 9 presence of polymers in mixtures of surfactants may lead to molecular interactions thereby affecting product stability and activity. For these reasons it is very important to determine the surfactant interactions influence on 1micellization and mixed micellization, as well as polymer-surfactants mixed micelles interactions. In this work we examined self-aggregation of nonionic surfactants, polysorbate 20 (Tween 20), polyoxyethylene octylphenyl ether (Triton X100) and polyoxyethylene-polyoxypropylene block copolymer (Pluronic F68) with ionic surfactant, sodium dodecylsulfate, in aqueous solution at 40ºC using conductometric titration method. It was found that concentration region for mixed micelle formation depends on nonionic surfactant characteristics and its concentration. Formation of surfactants mixed micelles in the presence of nonionic polymer, hydroxypropylmethyl cellulose, and their binding to polymer hydrophobic sites, were investigated too. Analysis of obtained results points to different kinds of interactions in investigated systems, which are crucial for their application. [Projekat Ministarstva nauke Republike Srbije, br. III 46010

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