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A novel nethod of extraction of blend component structure from SANS measurements of homopolymer bimodal blends

Smerdova, Olga; Graham, Richard Stuart; Gasser, Urs; Hutchings, Lian R.; De Focatiis, Davide S.A.

Authors

Olga Smerdova

Richard Stuart Graham

Urs Gasser

Lian R. Hutchings

Davide S.A. De Focatiis davide.defocatiis@nottingham.ac.uk



Abstract

A new method is presented for the extraction of single chain form factors and inter-chain 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 MA ≈ ½ MB By fitting Debye functions to the structure factors it was shown that there is good agreement between the molar mass of components obtained from SANS and from chromatography. The extraction method also enables, for the first time, to produce inter-chain scattering functions for scattering between chains of different lengths.

Journal Article Type Article
Publication Date May 2, 2014
Journal Macromolecular Chemistry and Physics
Print ISSN 1022-1352
Electronic ISSN 1521-3935
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 215
Issue 9
APA6 Citation Smerdova, O., Graham, R. S., Gasser, U., Hutchings, L. R., & De Focatiis, D. S. (2014). A novel nethod of extraction of blend component structure from SANS measurements of homopolymer bimodal blends. Macromolecular Chemistry and Physics, 215(9), https://doi.org/10.1002/macp.201300787
DOI https://doi.org/10.1002/macp.201300787
Keywords bimodal blends; polystyrene; small-angle neutron scattering (SANS)
Publisher URL http://onlinelibrary.wiley.com/doi/10.1002/macp.201300787/abstract
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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