Complex structured polymers in extensional flow – rheology and small-angle neutron scattering

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dc.contributor.authorMortensen, Ken_AU
dc.contributor.authorKirkensgaard, JJKen_AU
dc.contributor.authorBorger, Aen_AU
dc.contributor.authorHassager, Oen_AU
dc.contributor.authorAlmdal, Ken_AU
dc.contributor.authorHuang, Qen_AU
dc.contributor.authorDorokhin, Aen_AU
dc.contributor.authorGarvey, CJen_AU
dc.date.accessioned2021-08-11T22:11:32Zen_AU
dc.date.available2021-08-11T22:11:32Zen_AU
dc.date.issued2017-07-12en_AU
dc.date.statistics2021-08-08en_AU
dc.description.abstractSmall-Angle Neutron Scattering are used to investigate stretched macromolecular fluid filaments to show how the extensional properties are related to the molecular architecture and properties. We have combined structural and rheological studies of a series of model polymers with different composition and architectures. The project entails synthesizing model polymer systems of specific architecture, subjecting these materials to controlled extensional flows and to measure the molecular deformation under controlled flow situation bySANS. We have targeted different systems: a ”simple\" sample of homogeneous high-molar mass polymers, where only the central part of a fraction of the polymers were D-labelled with the aim to highlight the polymer deformation and avoid influence of fast relaxation near the polymer ends [1]. Another example is a bimodal mixture of linear polymer chains with respectively high and low molar mass [2], and we have studied samples with more complex geometry, including 3-arm star architecture. The linear chains show typically 2D-SANS pattern with Lozenge shaped contour. The 3-arm star polymers show novel, unexpected correlations perpendicular to the flow axis. The structure and rheology are measured both as a function of strain flow velocity, final Hencky strain ratio and during the relaxation after cessation of extensional flow.en_AU
dc.identifier.citationMortensen, K., Kirkensgaard, J., Borger, A., Hassager, O., Almdal, K., Huang, Q., Dorokhin, A., & Garvey, C. J. (2017). Complex structured polymers in extensional flow – rheology and small-angle neutron scattering. Paper presented at ICNS 2017 (International Conference on Neutron Scattering), Daejeon, South Korea, 9 to 13 July 2017. Retrieved from: http://www.icns2017.org/program.phpen_AU
dc.identifier.conferenceenddate13 July 2017en_AU
dc.identifier.conferencenameICNS 2017 (International Conference on Neutron Scattering)en_AU
dc.identifier.conferenceplaceDaejeon, South Koreaen_AU
dc.identifier.conferencestartdate9 July 2017en_AU
dc.identifier.urihttp://www.icns2017.org/program.phpen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11334en_AU
dc.language.isoenen_AU
dc.publisherInternational Conference on Neutron Scatteringen_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectFilamentsen_AU
dc.subjectPolymersen_AU
dc.subjectDeformationen_AU
dc.subjectRelaxationen_AU
dc.subjectRheologyen_AU
dc.titleComplex structured polymers in extensional flow – rheology and small-angle neutron scatteringen_AU
dc.typeConference Abstracten_AU
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