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Time Resolved Polarised Grazing Incidence Neutron Scattering from Composite Materials
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.ORCID iD: 0000-0002-7517-8204
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.ORCID iD: 0000-0001-6066-4616
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics. Univ Rennes 1, Inst Phys Rennes, Rennes, France.ORCID iD: 0000-0002-0639-6742
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.ORCID iD: 0000-0002-5748-2237
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2019 (English)In: Polymers, ISSN 2073-4360, E-ISSN 2073-4360, Vol. 11, no 3, article id 445Article in journal (Refereed) Published
Abstract [en]

Neutron scattering experiments are a unique tool in material science due to their sensitivity to light elements and magnetic induction. However, for kinetic studies the low brilliance at existing sources poses challenges. In the case of periodic excitations these challenges can be overcome by binning the scattering signal according to the excitation state of the sample. To advance into this direction we have performed polarised and time resolved grazing incidence neutron scattering measurements on an aqueous solution of the polymer F127 mixed with magnetic nano-particles. Magnetic nano-composites like this provide magnetically tuneable properties of the polymer crystal as well as magnetic meta-crystals. Even though the grazing incidence small angle scattering and polarised signals are too weak to be evaluated at this stage we demonstrate that such experiments are feasible. Moreover, we show that the intensity of the 111 Bragg peak of the fcc micellar crystal depends on the actual shear rate, with the signal being maximised when the shear rate is lowest (and vice-versa).

Place, publisher, year, edition, pages
MDPI , 2019. Vol. 11, no 3, article id 445
Keywords [en]
GISANS, composite materials, rheology
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-382997DOI: 10.3390/polym11030445ISI: 000464500300001PubMedID: 30960429OAI: oai:DiVA.org:uu-382997DiVA, id: diva2:1315288
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Swedish Research CouncilAvailable from: 2019-05-13 Created: 2019-05-13 Last updated: 2019-05-13Bibliographically approved

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Wolff, MaxSaini, ApurveSimonne, DavidAdlmann, FranzNelson, Andrew
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