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Silane-crosslinking of recycled low-density polyethylene/wood composites
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.ORCID-id: 0000-0001-9794-8305
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-4762-2854
2010 (engelsk)Inngår i: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 41, nr 5, s. 678-683Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The aim of this work was to study silane-crosslinking of recycled low-density polyethylene wood composites and its effect on composites properties. The composites were produced in a one-step twin-screw extrusion process and the silane-peroxide solution was pumped into the extruder. Degree of crosslinking, mechanical properties, short-term creep, fractured surfaces and nature of crosslinking were studied to understand the relationship between composite structure and properties. The results showed that crosslinked composite strength, toughness and creep resistance were improved compared to uncrosslinked composites. The flexural strength was doubled compared to uncrosslinked samples and the creep strain was reduced. The crosslinked composites stored under room conditions showed the highest strength, whereas storage in a sauna resulted in a higher degree of crosslinking. The Fourier transform infrared spectroscopy indicated formation of silane-bridges between wood and polyethylene, accordingly improving the interfacial adhesion between the wood and LDPE. The low concentration of peroxide in the silane-solution was shown to be a preferred composition to limit unintentional crosslinking during the process.

sted, utgiver, år, opplag, sider
2010. Vol. 41, nr 5, s. 678-683
HSV kategori
Forskningsprogram
Trä och bionanokompositer; Fysikalisk kemi
Identifikatorer
URN: urn:nbn:se:ltu:diva-8951DOI: 10.1016/j.compositesa.2010.01.018ISI: 000276430300013Scopus ID: 2-s2.0-77649336169Lokal ID: 7822a520-1716-11df-bae5-000ea68e967bOAI: oai:DiVA.org:ltu-8951DiVA, id: diva2:981889
Merknad
Validerad; 2010; 20100211 (krioks)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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Grubbström, GöranHolmgren, AllanOksman, Kristiina

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