Manufacturing pitch and polyethylene blends-based fibres as potential carbon fibre precursors

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dc.contributor.authorAldosari, Salem Mohammed
dc.contributor.authorKhan, Muhammad A.
dc.contributor.authorRahatekar, Sameer S.
dc.date.accessioned2021-04-30T12:13:22Z
dc.date.available2021-04-30T12:13:22Z
dc.date.issued2021-04-29
dc.description.abstractThe advantage of mesophase pitch-based carbon fibres is their high modulus, but pitch-based carbon fibres and precursors are very brittle. This paper reports the development of a unique manufacturing method using a blend of pitch and linear low-density polyethylene (LLDPE) from which it is possible to obtain precursors that are less brittle than neat pitch fibres. This study reports on the structure and properties of pitch and LLDPE blend precursors with LLDPE content ranging from 5 wt% to 20 wt%. Fibre microstructure was determined using scanning electron microscopy (SEM), which showed a two-phase region having distinct pitch fibre and LLDPE regions. Tensile testing of neat pitch fibres showed low strain to failure (brittle), but as the percentage of LLDPE was increased, the strain to failure and tensile strength both increased by a factor of more than 7. DSC characterisation of the melting/crystallization behaviour of LLDPE showed melting occurred around 120 °C to 124 °C, with crystallization between 99 °C and 103 °C. TGA measurements showed that for 5 wt%, 10 wt% LLDPE thermal stability was excellent to 800 °C. Blend pitch/LLDPE carbon fibres showed reduced brittleness combined with excellent thermal stability, and thus are a candidate as a potential precursor for pitch-based carbon fibre manufacturing.en_UK
dc.identifier.citationAldosari SM, Khan MA, Rahatekar S. (2021) Manufacturing pitch and polyethylene blends-based fibres as potential carbon fibre precursors. Polymers, Volume 13, Issue 9, April 2021, Article number 1445en_UK
dc.identifier.issn2073-4360
dc.identifier.urihttps://doi.org/10.3390/polym13091445
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16640
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectblenden_UK
dc.subjectextrusionen_UK
dc.subjectcarbon fibresen_UK
dc.subjectpolyethyleneen_UK
dc.subjectpitchen_UK
dc.titleManufacturing pitch and polyethylene blends-based fibres as potential carbon fibre precursorsen_UK
dc.typeArticleen_UK

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