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Surfactant diffusion through bicontinuous micellar networks: A case study of the C(9)G(1)/C(10)G(1)/H2O mixed surfactant system

In English

Författare

Summary, in English

Self-diffusion coefficients were obtained by means of NMR diffusometry for differing ratios of n-decyl-beta-D-glucopyranoside (C(10)G(1)) and n-nonyl-beta-D-glueopyranoside (C(9)G(1)) surfactant mixtures, along dilution lines through the micellar region of the ternary C(9)G(1)/C(10)G(1)/H2O phase diagram. Networks of bicontinuous micelles have been suggested to exist throughout the micellar regions of the phase diagram. A phase separation into two coexisting liquid solutions is observed in the dilute, C(10)G(1)-rich regions of the phase diagram. The fact that the dilution curves follow scaling relations pertaining to surfactant diffusion in a network for mixtures rich in C(10)G(1) indicates that the phase separation is due to differences in the networks in different micellar regions of the phase diagram; networks remain largely intact despite dilution down to the phase separation in the C(10)G(1)-rich region, whereas networks with scissions are predicted to exist in the C(9)G(1)-rich regions of the micellar phase.

Avdelning/ar

Publiceringsår

2004

Språk

Engelska

Sidor

2172-2176

Publikation/Tidskrift/Serie

Langmuir

Volym

20

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

The American Chemical Society (ACS)

Ämne

  • Physical Chemistry

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0743-7463