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Melt rheology and extrudate swell properties of talc filled polyethylene compounds
University of Borås, Faculty of Textiles, Engineering and Business. (Polymer group)ORCID iD: 0000-0002-5725-586X
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-1209-3270
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-6596-8069
2020 (English)In: Heliyon, E-ISSN 2405-8440Article in journal (Refereed) Published
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
Abstract [en]

An experimental study of high-density polyethylene (HDPE) composites filled with talc (0–15 wt.%) was carried out to investigate the rheological properties. The apparent melt viscosity, melt density, and die-swell ratio (B) of the composites were measured at constant shear stress and constant shear rate by using a melt flow indexer and capillary rheometer. The experimental conditions were set to a temperature range from 190 to 220 C for both apparatuses whereas a load range from 5 to 12.16 kg was selected for melt flow indexer and shear rate range from 1 to 10000 s1 for capillary rheometer. The initial study showed that the talc particulates did not influence the melt viscosity compared with the neat HDPE but decreased the elasticity of the polymer system. The HDPE/talc systems obeyed power-law model in shear stress–shear rate variations and were shear thinning, meanwhile, the die-swell increased with an increased wall shear rate and shear stress. The melt density of the composites increased linearly with an increase of the filler weight fraction and decreased with the increase of the testing temperature. The talc-HDPE composites showed compressible in the molten state.

Place, publisher, year, edition, pages
Elsevier, 2020.
Keywords [en]
Materials science, High-density polyethylene, Talc Melt viscosity, Melt density, Die swell
National Category
Engineering and Technology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-23237DOI: 10.1016/j.heliyon.2020.e04060ISI: 000537749900180Scopus ID: 2-s2.0-85085337216OAI: oai:DiVA.org:hb-23237DiVA, id: diva2:1432442
Available from: 2020-05-27 Created: 2020-05-27 Last updated: 2024-02-01Bibliographically approved

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Kalantar Mehrjerdi, AdibBashir, TariqSkrifvars, Mikael

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