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Sökning: WFRF:(Wolff F) > Combined neutron re...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00002263naa a2200313 4500
001oai:DiVA.org:uu-212840
003SwePub
008131216s2013 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2128402 URI
024a https://doi.org/10.1107/S00218898130240592 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Wolff, Maxu Uppsala universitet,Materialfysik4 aut0 (Swepub:uu)maxwo643
2451 0a Combined neutron reflectometry and rheology
264 1c 2013
338 a print2 rdacarrier
520 a Neutron reflectometry has been combined with rheology in order to investigate the solid boundary of liquids and polymers under shear deformation. This approach allows one to apply a controlled stress to a material while resolving the structural arrangements on the sub-nanometre length scale with neutron reflectivity, off-specular scattering and small-angle scattering at the same time. The specularly reflected neutron intensity of a 20% by weight solution of Pluronic F127 in deuterated water in contact with an octadecyl trichlorosilane-covered and a piranha-treated silicon wafer is evaluated. A pronounced difference is found in the structure formed by the polymer micelles at the two surfaces, which is explained by the difference in the affinity of the micellar shell to the solid interfaces. Under deformation, the near interface structure changes at deformations of about 2, 30 and 900%. The structural changes are correlated with changes in the storage and loss modulus of the polymer solution, revealing a transition from more solid to more liquid like properties.
700a Kuhns, Peteru Uppsala universitet,Materialfysik4 aut0 (Swepub:uu)petku375
700a Liesche, G.4 aut
700a Ankner, J. F.4 aut
700a Browning, J. F.4 aut
700a Gutfreund, P.4 aut
710a Uppsala universitetb Materialfysik4 org
773t Journal of applied crystallographyg 46:Part 6, s. 1729-1733q 46:Part 6<1729-1733x 0021-8898x 1600-5767
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-212840
8564 8u https://doi.org/10.1107/S0021889813024059

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