Conformational properties of chains and supramolecular structures of sulfonated polystyrene ionomers in D-benzene
The method of small-angle cold-neutron scattering is used to study the conformational properties of chains of sulfonated polystyrene-based ionomers containing different amounts of sodium sulfonate groups SO 3 Na (0.5, 1.35, and 2.6 mol %) and the character of their self-organization in D -benzene. A...
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Published in | Polymer Science. Series A Vol. 52; no. 3; pp. 228 - 234 |
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Main Authors | , , , |
Format | Journal Article |
Language | English Russian |
Published |
Dordrecht
SP MAIK Nauka/Interperiodica
01.03.2010
Springer Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | The method of small-angle cold-neutron scattering is used to study the conformational properties of chains of sulfonated polystyrene-based ionomers containing different amounts of sodium sulfonate groups SO
3
Na (0.5, 1.35, and 2.6 mol %) and the character of their self-organization in
D
-benzene. An analysis of the momentum transfer dependence of scattering intensity shows that the conformation of ionomer chains remains close to the Gaussian conformation, regardless of the content of ionogenic groups. It is found that, in local portions within a segment, the rigidity of chains increases owing to formation of physical crosslinks between chains arising from electrostatic interactions of ionogenic groups. Interchain interactions involving multiplets of ionogenic groups lead to the self-organization of ionomers into supramolecular structures (associates) that manifest themselves as Gaussian chains and include 13–18 macromolecules at moderate and high degrees of sulfonation of PS. When the centers of gravity approach each other at the distance of a diameter (40–70 nm), the associates come into contact and give rise to clusters. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0965-545X 1757-1820 1555-6107 |
DOI: | 10.1134/S0965545X10030028 |