Shear-induced order in aqueous micellar solutions of amphiphilic poly(tert-butylstyrene)-b-poly(Na methacrylate) diblock

Leyh, Bernard; Creutz, S.; Gaspard, J. P.; Bourgaux, C.; Jérôme, Robert

doi:10.1021/ma980918z

Article (Scientific journals)

Shear-induced order in aqueous micellar solutions of amphiphilic poly(tert-butylstyrene)-b-poly(Na methacrylate) diblock

Leyh, Bernard; Creutz, S.; Gaspard, J. P. et al.

1998 • In Macromolecules, 31 (26), p. 9258-9264

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https://hdl.handle.net/2268/122134

DOI
10.1021/ma980918z

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Abstract :

[en] Shear-induced order of aqueous micellar solutions of a poly(tert-butylstyrene)-b-poly(sodium methacrylate) diblock (c ) 2.5-15 w/v %) has been investigated by small-angle X-ray scattering. Data collected from a Couette cell in both radial and tangential geometries agree with a crystalline ordering of micelles in close packed hexagonal layers perpendicular to the velocity gradient, when c is in the 5-10 w/v % range. The measured interlayer distance is indeed very close to the value expected for a closepacked structure. The experimental data are consistent with a zigzag motion of adjacent planes upon shear. Shear-induced order is, however, restricted to a narrow concentration range just above the concentration for the sol-gel transition. This domain is thought to correspond to a regime where relative layer translation modes are allowed whereas mutual rotation is hindered.

Disciplines :

Chemistry

Author, co-author :

Leyh, Bernard ; Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de dynamique moléculaire

Creutz, S.

Gaspard, J. P.

Bourgaux, C.

Jérôme, Robert ; Université de Liège - ULiège > Centre d'études et de rech. sur les macromolécules (CERM)

Language :

English

Title :

Shear-induced order in aqueous micellar solutions of amphiphilic poly(tert-butylstyrene)-b-poly(Na methacrylate) diblock

Publication date :

1998

Journal title :

Macromolecules

ISSN :

0024-9297

eISSN :

1520-5835

Publisher :

Amer Chemical Soc, Washington, United States

Volume :

Issue :

Pages :

9258-9264

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 16 May 2012

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