Aggregation behavior and intermolecular interaction of binary surfactant mixtures based on cationic Geminis and nonionic surfactants
Küçük Resim Yok
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The Gemini surfactants of type alkylediyl-alpha-omega-bis(alkyldimethylammonium) dibromide with different alkyl groups containing m carbon atoms and an ethanediyl spacer, referred as m-2-m [C (m) H2m + 1(CH2)(2) N+(CH2)(2) N+(CH2)(2) C (m) H2m + 1, 2Br(-)] (m = 12 and 16), have been synthesized, purified, and characterized in our laboratory. The interactions between cationic Geminis and nonionic surfactants polyoxyethylene (23) lauryl ether (Brij35) and polyoxyethyleneoctyl phenyl ether (TX-100) have been studied by conductivity and steady-state fluorescence quenching techniques at a certain micellar concentration range and certain temperature. Rubingh's theory is used to evaluate the micellar interaction parameters (beta) for the mixed systems. It has been observed that mixed micelle formation in all the binary mixtures exhibited negative synergism (antagonism) or ideal behavior due to positive beta values. It was observed that contribution of conventional surfactants was always more than that of the Geminis. By using the ratio of peak intensities, micro-polarity, dielectric constant (D), and binding constant (K (sv)) of mixed systems have been found.
Açıklama
Anahtar Kelimeler
Antagonistic Interactions, Cationic Gemini Surfactants, Nonionic Surfactants, Micellar Interaction Parameters, Micelle Aggregation Numbers, Mixed Micelles, Triton X-100, Micellization, Probes
Kaynak
Colloid And Polymer Science
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
293
Sayı
12
