Title :

Determining the Preferred Alkane Carbon Number (PACN) of nonionic surfactants using the PIT-slope method

Author(s) :

Ontiveros, Jesus [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Pierlot, Christel [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Catté, Marianne [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Salager, Jean-Louis [Auteur]
Aubry, Jean-Marie [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Volume number :

536

Pages :

30-37

Publisher :

Elsevier

Publication date :

2018-01-05

English keyword(s) :

PIT-slope method
PACN
Surfactants classification
Surfactants mixture
HLD
Oil scan

HAL domain(s) :

Chimie/Chimie organique

English abstract : [en]

In this paper the Phase Inversion Temperature (PIT) of the C10E4/n-Octane/0.01 M NaCl(aq) emulsion was used as a reference to determine the changes introduced by adding small amounts of a second surfactant S2. The so-called ...
Show more >In this paper the Phase Inversion Temperature (PIT) of the C10E4/n-Octane/0.01 M NaCl(aq) emulsion was used as a reference to determine the changes introduced by adding small amounts of a second surfactant S2. The so-called PIT-slope method allowed the calculation of the dPIT/dx2 value, i.e. the linear variation of PIT with the molar fraction x2 of second surfactant S2. For nonionics polyethoxylated surfactants CiEj, dPIT/dx2 showed a linear dependency respect to the Preferred Alkane Carbon Number (PACN), one of the parameters of the HLD equation based on phase behavior. We calculated here the PACN from PIT and x2 data for CiEj and other nonionic surfactants derived from isosorbide or glycerol. When possible, the experimental PACN is determined from n-alkane scans at 25 °C, and used to validate the proposed estimation method. The effects of changing the oil nature and water salinity on dPIT/dx2 are discussed in terms of the HLD equation and validates the hypothesis that allows calculate the PACN.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

ENSCL
Université de Lille
CNRS
Centrale Lille
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Colloïdes catalyse oxydation (CÏSCO)

Submission date :

2019-09-25T14:06:38Z
2021-03-16T14:19:09Z