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Grazing-incidence small-angle neutron scattering at high pressure (HP-GISANS): a soft matter feasibility study on grafted brush films

Grazing-incidence small-angle neutron scattering (GISANS) under pressure (HP-GISANS) at the solid (Si)-liquid (D2O) interface is demonstrated for the pressure-induced lateral morphological characterization of the nanostructure in thin (<100 nm) soft matter films. We demonstrate feasibility by inv...

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Main Authors: Vagias, Apostolos N. (Author) , Manouras, T. (Author) , Buchner, A. (Author) , Gutfreund, P. (Author) , Porcar, L. (Author) , Jacques, M. (Author) , Chiappisi, L. (Author) , Kosbahn, D. P. (Author) , Wolf, M. (Author) , Guasco, L. (Author) , Dahint, Reiner (Author) , Vamvakaki, M. (Author) , Müller-Buschbaum, Peter (Author)
Format: Article (Journal)
Language:English
Published: 4 November 2024
In: Journal of applied crystallography
Year: 2024, Volume: 57, Issue: 6, Pages: 1978-1983
ISSN:1600-5767
DOI:10.1107/S1600576724009130
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1107/S1600576724009130
Verlag, lizenzpflichtig, Volltext: https://journals.iucr.org/j/issues/2024/06/00/xx5058/
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Author Notes:A. Vagias, T. Manouras, A. Buchner, P. Gutfreund, L. Porcar, M. Jacques, L. Chiappisi, D.P. Kosbahn, M. Wolf, L. Guasco, R. Dahint, M. Vamvakaki, P. Müller-Buschbaum
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Summary:Grazing-incidence small-angle neutron scattering (GISANS) under pressure (HP-GISANS) at the solid (Si)-liquid (D2O) interface is demonstrated for the pressure-induced lateral morphological characterization of the nanostructure in thin (<100 nm) soft matter films. We demonstrate feasibility by investigating a hydrophobic {poly[(2,2,3,3,4,4,5,5-octafluoro)pentyl methacrylate]} (POFPMA)-hydrophilic {poly[2-(dimethylamino)ethyl methacrylate]} (PDMAEMA) brush mixture of strong incompatibility between the homopolymers, anchored on Si, at T = 45°C for two pressures, P = 1 bar and P = 800 bar. Our GISANS results reveal nanostructural rearrangements with increasing P, underlining P-induced effects in tethered polymer brush layers swollen with bulk solvent.
Item Description:Gesehen am 05.09.2025
Physical Description:Online Resource
ISSN:1600-5767
DOI:10.1107/S1600576724009130

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