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dc.contributor.authorLyu, D.
dc.contributor.authorSun, Y.
dc.contributor.authorLu, Y.
dc.contributor.authorLiu, L.
dc.contributor.authorChen, R.
dc.contributor.authorThompson, Glen P.
dc.contributor.authorCaton-Rose, Philip D.
dc.contributor.authorCoates, Philip D.
dc.contributor.authorWang, Y.
dc.contributor.authorMen, Y.
dc.date.accessioned2021-01-12T11:49:44Z
dc.date.accessioned2021-01-15T13:02:45Z
dc.date.available2021-01-12T11:49:44Z
dc.date.available2021-01-15T13:02:45Z
dc.date.issued2020-06
dc.identifier.citationLyu D, Sun Y, Lu Y et al (2020) Suppressed cavitation in die-drawn isotactic polypropylene. Macromolecules. 53(12): 4863-4873.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18314
dc.descriptionYesen_US
dc.description.abstractCavitation is an important phenomenon in solid-phase deformation of polymers, which either has potential adverse effects on physical properties or creates potential opportunities for new properties. In either case, it needs to be better understood to help achieve better control of cavitation and its effects. Cavitation associated with solid-phase deformation in a β-nucleated isotactic polypropylene was found to depend on the solid-phase deformation route employed. Compared with samples obtained by free tensile stretching, cavitation was suppressed in samples deformed via die-drawing, although an almost identical β-to α-phase transition was observed for both deformation routes. Even when die-drawn samples were subsequently deformed to large strains by free stretching, there was still no comparable cavitation compared with the single free tensile-stretching route. The die-drawing process appears to suppress cavitation by fundamentally diminishing the number of growable nuclei of cavities, rather than merely hindering the growth of cavities. A relationship between cavitation intensity and the fractions of lamellae along specific directions has been established. During subsequent free stretching of die-drawn samples, newly created cavities were suggested to be initiated within the crystalline layers. The reduction of the cavity nuclei in the die-drawing process originated from the stabilization of the connections between the crystalline blocks within the lamellae.en_US
dc.description.sponsorshipThis work is supported by the National Natural Science Foundation of China (21704102 and 51525305), Newton Advanced Fellowship of the Royal Society, United Kingdom (NA 150222) and ExxonMobil.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1021/acs.macromol.0c00005en_US
dc.rights© 2020 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.macromol.0c00005.en_US
dc.subjectCavitationen_US
dc.subjectDie drawingen_US
dc.subjectDeformationen_US
dc.subjectIsotactic polypropyleneen_US
dc.subjectX-rayen_US
dc.subjectBeta iPPen_US
dc.titleSuppressed cavitation in die-drawn isotactic polypropyleneen_US
dc.status.refereedYesen_US
dc.date.Accepted2020-05
dc.date.application2020-06-03
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
dc.date.updated2021-01-12T11:49:47Z
refterms.dateFOA2021-01-15T13:04:58Z
dc.openaccess.statusGreenen_US


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