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Investigation of Polymer Brushes and Adsorbed Layers under Shear (1997)

Nguyen, D. ; Clarke, C. J. ; Eisenberg, A. ; [et al.]

Copenhagen : International Union of Crystallography (IUCr)

Applied crystallography online 30 (1997), S. 680-683

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ISSN: 1600-5767

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Geosciences , Physics

Notes: Neutron reflectometry was used to investigate the density profiles of polymer brushes and an adsorbed polymer layer under shear. The brushes consisted of end-functionalized deuterated polystyrene. The adsorbed polymer was a random copolymer of deuterated styrene and 4-vinylpyridine. The brush and the adsorbed layer were sheared by the flowing of solvents over the polymer, with a maximum shear rate of 104s−1. Density profiles of the brush and the layer were determined before, during and after shear. The shear had no observable effect on the polymer profiles in any of the experiments. We discuss these results in the context of other experiments and a recent theory.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0021889897001532

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