Pelletizing ultra-high molecular weight polyethylene (UHMWPE) powders with a novel tapered die and addition of high density polyethylene (HDPE): Processing, morphology, and properties

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dc.authoridYilmaz, Galip/0000-0001-8128-3193
dc.contributor.authorYang, Huaguang
dc.contributor.authorYilmaz, Galip
dc.contributor.authorJiang, Jing
dc.contributor.authorXie, Jun
dc.contributor.authorLangstraat, Thomas
dc.contributor.authorChu, Raymond
dc.contributor.authorvan Es, Martin
dc.date.accessioned2024-10-04T18:52:36Z
dc.date.available2024-10-04T18:52:36Z
dc.date.issued2022
dc.departmentBayburt Üniversitesien_US
dc.description.abstractThe extremely high molecular weight and molecular entanglement have rendered ultra-high molecular weight polyethylene (UHMWPE) superior properties. However, poor inter-particle diffusion makes it difficult to pelletize UHMWPE powders for easy processing/handling. A novel tapered die with air cooling was proposed to pelletize UHMWPE and a UHMWPE blend with 5 wt% high-density polyethylene (HDPE) for compression molding and material characterization. The tensile strength of samples prepared with the tapered die outperformed those by the regular die or from virgin powders. The addition of HDPE further improved the tensile strength. Fourier transform infrared spectroscopy (FTIR) revealed little chain scission and the lowest amount of oxidation from the tapered die. Intrinsic viscosity (IV) measurements confirmed the negligible chain scission and showed an increment in IV for the UHMWPE/HDPE blend. Multi-angle light scattering with size-exclusion chromatography (SEC-MALS) indicated no change in the UHMWPE molecular weight distribution, but some crosslinking in the blend. Polarized optical microscopy (POM) showed that the HDPE and extrusion led to a finer UHMWPE domain size and better fusion between UHMWPE and HDPE. The combined effect of enhanced molecular chain diffusion, improved consolidation, and lower oxidation using the tapered die led to 40% improvement of tensile strength for the UHMWPE/HDPE blend.en_US
dc.description.sponsorshipSABIC; Wisconsin Institute for Discovery at the University of Wisconsin-Madison; Consolidated Papers Foundation Chair Professorship; Kuo K. and Cindy F. Wang Professorshipen_US
dc.description.sponsorshipThe authors would like to acknowledge the generous material donation as well as the financial and technical support from SABIC. This study was also supported by the Wisconsin Institute for Discovery at the University of Wisconsin-Madison, the Kuo K. and Cindy F. Wang Professorship, and the Consolidated Papers Foundation Chair Professorship.en_US
dc.identifier.doi10.1016/j.polymer.2022.125171
dc.identifier.issn0032-3861
dc.identifier.issn1873-2291
dc.identifier.scopus2-s2.0-85135512860en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.polymer.2022.125171
dc.identifier.urihttp://hdl.handle.net/20.500.12403/3582
dc.identifier.volume256en_US
dc.identifier.wosWOS:000860196300003en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofPolymeren_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectUHMWPEen_US
dc.subjectPelletizationen_US
dc.subjectTapered dieen_US
dc.titlePelletizing ultra-high molecular weight polyethylene (UHMWPE) powders with a novel tapered die and addition of high density polyethylene (HDPE): Processing, morphology, and propertiesen_US
dc.typeArticleen_US

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