Capillary flow behavior of worm‐like micelles studied by small‐angle X‐ray scattering and small angle light scattering | Zendy

Castelletto V. | Zendy; Hamley I. W. | Zendy

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Capillary flow behavior of worm‐like micelles studied by small‐angle X‐ray scattering and small angle light scattering

Author(s) -

Castelletto V.,

Hamley I. W.

Publication year - 2006

Publication title -

polymers for advanced technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.61

H-Index - 90

eISSN - 1099-1581

pISSN - 1042-7147

DOI - 10.1002/pat.712

Subject(s) - small angle x ray scattering , micelle , materials science , scattering , light scattering , aqueous solution , small angle scattering , capillary action , optics , flow (mathematics) , crystallography , composite material , chemistry , physics , mechanics , organic chemistry

A novel capillary flow device has been developed and applied to study the orientation of worm‐like micelles, among other systems. Small‐angle X‐ray scattering (SAXS) data from micelles formed by a Pluronic block copolymer in aqueous salt solution provides evidence for the formation of worm‐like micelles, which align under flow. A transition from a rod‐like form factor to a less persistent conformation is observed under flow. Flow alignment of worm‐like micelles formed by the low molar mass amphiphile system cetyl pyridinium chloride+sodium salicylate is studied for comparative purposes. Here, inhomogenous flow at the micron scale is revealed by streaks in the small‐angle light scattering pattern perpendicular to the flow direction. Copyright © 2006 John Wiley & Sons, Ltd.

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