Mechanism of micelle formation in sodium dodecyl sulfate and cetyltrimethylammonium bromide

TOPALLAR H., KARADAĞ B.

Journal of Surfactants and Detergents, cilt.1, sa.1, ss.49-51, 1998 (Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1 Sayı: 1
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1007/s11743-998-0007-5
  • Dergi Adı: Journal of Surfactants and Detergents
  • Derginin Tarandığı İndeksler: Scopus
  • Sayfa Sayıları: ss.49-51
  • Anahtar Kelimeler: Cetyltrimethylammonium bromide, Critical micellar concentration, Hydrochloric acid, Micelle formation, PH, Phase separation, Potassium hydroxide, Sodium dodecyl sulfate
  • Trakya Üniversitesi Adresli: Evet

Özet

pH changes as a function of concentration for sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) were observed by addition of 1 N HCl and 1 N KOH. pH values increased up to the critical micellar concentration (CMC) for the SDS/HCl system and decreased for the CTAB/KOH system. In the SDS/HCl and CTAB/KOH systems, the micellar phase had a fixed composition and was homogeneous and monodisperse above the CMC. However, in the SDS/KOH and CTAB/HCl systems, pH values increased continuously and gradually below and above the CMC, and the properties of the micellar phase changed as a function of concentration, giving rise to inhomogeneity and polydispersity.