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Title: Salt-induced transition from a micellar to a lamellar liquid crystalline phase in dilute mixtures of anionic and nonionic surfactants in aqueous solution

Abstract

In dilute mixtures of anionic surfactant, sodium dodecylbenzenesulfonate (NaDoBS), and nonionic poly(ethylene oxide) alkylmonoether (C[sub 13-15]E[sub <7>]) a transition from a micellar to a lamellar phase is found at high salting-out electrolyte (NaCit) concentrations. With an increase of the salt concentration, different types of lamellar aggregates are formed. The existence of different types of aggregates is reflected by changes of the turbidity of the solutions. Light and fluorescence microscopy, freeze-fractured electron microscopy, confocal scanning laser microscopy (CSLM), and fluorescence depolarization were employed to characterize the aggregates and to induce a mechanism for the transition from a micellar to a lamellar phase. Surfactant aggregation is important in view of possible applications in enhanced oil recovery. 39 refs., 10 figs.

Authors:
;  [1]; ;  [2]
  1. Univ. of Groningen (Netherlands)
  2. Unilever Research Lab., Vlaardingen (Netherlands)
Publication Date:
OSTI Identifier:
5846084
Resource Type:
Journal Article
Journal Name:
Langmuir; (United States)
Additional Journal Information:
Journal Volume: 9:7; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 02 PETROLEUM; SURFACTANTS; AGGLOMERATION; ENHANCED RECOVERY; LAMELLAE; LIQUID CRYSTALS; MICELLAR SYSTEMS; SALTS; CRYSTALS; FLUIDS; LIQUIDS; 400201* - Chemical & Physicochemical Properties; 020300 - Petroleum- Drilling & Production

Citation Formats

Sein, A, Engberts, J B.F.N., Linden, E van der, and Pas, J.C. van de. Salt-induced transition from a micellar to a lamellar liquid crystalline phase in dilute mixtures of anionic and nonionic surfactants in aqueous solution. United States: N. p., 1993. Web. doi:10.1021/la00031a018.
Sein, A, Engberts, J B.F.N., Linden, E van der, & Pas, J.C. van de. Salt-induced transition from a micellar to a lamellar liquid crystalline phase in dilute mixtures of anionic and nonionic surfactants in aqueous solution. United States. https://doi.org/10.1021/la00031a018
Sein, A, Engberts, J B.F.N., Linden, E van der, and Pas, J.C. van de. 1993. "Salt-induced transition from a micellar to a lamellar liquid crystalline phase in dilute mixtures of anionic and nonionic surfactants in aqueous solution". United States. https://doi.org/10.1021/la00031a018.
@article{osti_5846084,
title = {Salt-induced transition from a micellar to a lamellar liquid crystalline phase in dilute mixtures of anionic and nonionic surfactants in aqueous solution},
author = {Sein, A and Engberts, J B.F.N. and Linden, E van der and Pas, J.C. van de},
abstractNote = {In dilute mixtures of anionic surfactant, sodium dodecylbenzenesulfonate (NaDoBS), and nonionic poly(ethylene oxide) alkylmonoether (C[sub 13-15]E[sub <7>]) a transition from a micellar to a lamellar phase is found at high salting-out electrolyte (NaCit) concentrations. With an increase of the salt concentration, different types of lamellar aggregates are formed. The existence of different types of aggregates is reflected by changes of the turbidity of the solutions. Light and fluorescence microscopy, freeze-fractured electron microscopy, confocal scanning laser microscopy (CSLM), and fluorescence depolarization were employed to characterize the aggregates and to induce a mechanism for the transition from a micellar to a lamellar phase. Surfactant aggregation is important in view of possible applications in enhanced oil recovery. 39 refs., 10 figs.},
doi = {10.1021/la00031a018},
url = {https://www.osti.gov/biblio/5846084}, journal = {Langmuir; (United States)},
issn = {0743-7463},
number = ,
volume = 9:7,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 1993},
month = {Thu Jul 01 00:00:00 EDT 1993}
}