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Mechanical and thermal behavior of natural fiber-polymer composites without compatibilizers

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Sajaniemi, Veikko
dc.contributor.author Karakoc, Alp
dc.contributor.author Paltakari, Jouni
dc.date.accessioned 2020-11-30T08:16:09Z
dc.date.available 2020-11-30T08:16:09Z
dc.date.issued 2020
dc.identifier.citation Sajaniemi , V , Karakoc , A & Paltakari , J 2020 , ' Mechanical and thermal behavior of natural fiber-polymer composites without compatibilizers ' , Research on Engineering Structures and Materials , vol. 6 , no. 1 . https://doi.org/10.17515/resm2019.124ma0308 en
dc.identifier.issn 2148-9807
dc.identifier.other PURE UUID: 7a980dd2-b43d-4d9b-96c1-ad85b1d40fa5
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/7a980dd2-b43d-4d9b-96c1-ad85b1d40fa5
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/53295877/resm2019.124ma0308.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/61738
dc.description.abstract The present study aims at understanding the mechanical and thermal properties of natural fibers in a polymer matrix without strong adhesionbetween the two constitutes. For this purpose, four types of pulps, which arerefined and unrefined pine and birch kraft pulps,were used together with polypropylene without any compatibilizer. One constituent pulpbasedand composite pulp fiber-polypropylene handsheets were prepared by standard laboratory sheet preparation method followed by hot pressing process. In addition to these handsheets, pure polypropylene sheets were also formed as the reference. The produced handsheets were testedtodetermine their tensile properties following the ISO 1924-2 standard for paper and board. During these tests, infrared thermal imaging was also carried out with FLIR A655SC thermal camera with frame rate of 200 Hz and thermal resolution of 50 mK so as to investigate the thermal behavior. As a result of the experiments, it was deducedthat the chosen methods produced composites with unsatisfactory properties. In addition, microstructures of the investigated handsheets were analyzed with scanning electronmicroscopy (SEM)indicating theheterogeneous mixing of constituents and existence of material defects, whichwas mainly due to the inherent incompatibility of hydrophilic natural fibers and hydrophobic thermoplastics. The study aims at pavinga way for improved naturalfiber-polymer composite manufacturing methods, a requirement for better understanding the natural fiberand polymer matrix bonding practices. en
dc.format.extent 11
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Research on Engineering Structures and Materials en
dc.relation.ispartofseries Volume 6, issue 1 en
dc.rights openAccess en
dc.title Mechanical and thermal behavior of natural fiber-polymer composites without compatibilizers en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Communications and Networking
dc.contributor.department Paper Converting and Packaging
dc.contributor.department Department of Bioproducts and Biosystems en
dc.subject.keyword pulp
dc.subject.keyword polypropylene
dc.subject.keyword compatibilizer
dc.subject.keyword natural fiber polymer composite
dc.identifier.urn URN:NBN:fi:aalto-2020113020583
dc.identifier.doi 10.17515/resm2019.124ma0308
dc.type.version publishedVersion

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