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The size, shape and hydration of micelles in aqueous medium

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Book cover Surfactants, Adsorption, Surface Spectroscopy and Disperse Systems

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 70))

Abstract

The size, shape and hydration of micelles (Triton-X-100, NaDDS, NP-10, NP-13, NP-18) in aqueous media were estimated based on micellar molecular weight and intrinsic viscosity data. The hydration values were estimated by using the Simha factor. The most consistent data (i.e. degree of hydration) were obtained when assuming an ellipsoidal shape of Triton-X-100 micelles as being oblate, while prolate shapes did not give useful values, both as regards hydration and axial ratios. However, the analyses of other micellar systems did not provide a definite conclusion as regards the ellipsoidal shape.

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Abbreviations

N:

aggregation number

Nn :

number average aggregation number

Nw :

weight average aggregation number

R Stokes :

Stokes radius

Rhc :

radius of hydrocarbon core of micelle

Lhc :

length of hydrocarbon chain

Lp :

length of polar groups

Vm :

volume of micelle

V lhc :

volume of hydrocarbon chain

V mhc :

volume of hydrocarbon core

V lp :

volume of polar group per chain

pr:

prolate

ob:

oblate

V mStokes :

volume of micelle from R s

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Authors and Affiliations

  1. Fysisk-Kemisk Institut, The Technical University of Denmark, Building 206, DK-2800, Lyngby, Denmark

    K. S. Birdi

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  1. K. S. Birdi
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B Lindman G. Olofsson P. Stenius

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© 1985 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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Birdi, K.S. (1985). The size, shape and hydration of micelles in aqueous medium. In: Lindman, B., Olofsson, G., Stenius, P. (eds) Surfactants, Adsorption, Surface Spectroscopy and Disperse Systems. Progress in Colloid & Polymer Science, vol 70. Steinkopff. https://doi.org/10.1007/BFb0114301

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  • DOI: https://doi.org/10.1007/BFb0114301

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-0667-1

  • Online ISBN: 978-3-7985-1699-1

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