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The effect of pre-softened wood chips on wood fibre aspect ratio and mechanical properties of wood-polymer composites
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0002-9076-931X
Luleå University of Technology.
University of Oulu.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-4762-2854
2011 (Engelska)Ingår i: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 42, nr 12, s. 2110-2116Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The objective of this work was to study the effect of chemical pre-treatment and moisture content of wood chips on the wood particle aspect ratio after compounding in a twin-screw extruder and on the mechanical properties of wood-polymer composites (WPC). Composites with 50 wt% wood content were manufactured using pre-treated and untreated wood chips. The effect of wood moisture content on composite properties was studied by using dried and undried wood chips. The mechanical properties and fracture surfaces of the composites as well as the microstructure and aspect ratio of wood particles after compounding were studied. The highest wood particle aspect ratio after extrusion was achieved by using pre-treated, undried wood chips as raw material. The chemical pre-treatment was found to enhance the defibration of wood chips as well as the mechanical properties of the composites.

Ort, förlag, år, upplaga, sidor
2011. Vol. 42, nr 12, s. 2110-2116
Nationell ämneskategori
Biomaterial
Forskningsämne
Trä och bionanokompositer
Identifikatorer
URN: urn:nbn:se:ltu:diva-7199DOI: 10.1016/j.compositesa.2011.09.021ISI: 000297398000028Scopus ID: 2-s2.0-80055070698Lokalt ID: 58633539-b476-4160-9ba2-a6973f3545e8OAI: oai:DiVA.org:ltu-7199DiVA, id: diva2:980088
Anmärkning
Validerad; 2011; 20110525 (krioks)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Hietala, MaijuOksman, Kristiina

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