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A Novel Method of Extraction of Blend Component Structure from SANS Measurements of Homopolymer Bimodal Blends

Smerdova, O.; Graham, R.S.; Gasser, U.; Hutchings, L.R.; De Focatiis, D.S.A.

A Novel Method of Extraction of Blend Component Structure from SANS Measurements of Homopolymer Bimodal Blends Thumbnail


Authors

O. Smerdova

R.S. Graham

U. Gasser

D.S.A. De Focatiis



Abstract

A new method is presented for the extraction of single-chain form factors and interchain interference functions from a range of small-angle neutron scattering (SANS) experiments on bimodal homopolymer blends. The method requires a minimum of three blends, made up of hydrogenated and deuterated components with matched degree of polymerization at two different chain lengths, but with carefully varying deuteration levels. The method is validated through an experimental study on polystyrene homopolymer bimodal blends with inline image. By fitting Debye functions to the structure factors, it is shown that there is good agreement between the molar mass of the components obtained from SANS and from chromatography. The extraction method also enables, for the first time, interchain scattering functions to be produced for scattering between chains of different lengths.

Citation

Smerdova, O., Graham, R., Gasser, U., Hutchings, L., & De Focatiis, D. (2014). A Novel Method of Extraction of Blend Component Structure from SANS Measurements of Homopolymer Bimodal Blends. Macromolecular Chemistry and Physics, 215(9), 859-866. https://doi.org/10.1002/macp.201300787

Journal Article Type Article
Publication Date May 1, 2014
Deposit Date Jul 28, 2014
Publicly Available Date Mar 28, 2024
Journal Macromolecular Chemistry and Physics
Print ISSN 1022-1352
Electronic ISSN 1521-3935
Publisher Wiley-VCH Verlag
Peer Reviewed Peer Reviewed
Volume 215
Issue 9
Pages 859-866
DOI https://doi.org/10.1002/macp.201300787
Keywords Bimodal blends, Polystyrene, Small-angle neutron scattering (SANS).

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
© 2014 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.





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