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The Influence of a SBS Compatibilizer in Polyethylene-Wood Flour Composites
RISE, Swerea, Swerea SICOMP.
Luleå University of Technology.
1998 (English)In: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 52, no 6, p. 661-666Article in journal (Refereed)
Abstract [en]

A styrene-butadiene-styrene (SBS) block copolymer has been used as a compatibilizer in a low density polyethylene/wood flour (LDPE/WF) composite system. Dynamic mechanical thermal analysis (DMTA) and a transmission electron microscopy (TEM) were used to investigate the interfacial properties in the composites. A high resolution study of the composite microstructure, and especially of the interfaces between the wood particles and LDPE matrix, indicated that the SBS compatibilizer was located at the interface region between the wood particles and LDPE matrix and partially covered the wood particle surfaces. The SBS was also found in the LDPE matrix. The unsaturated part of the copolymer was stained with osmium(VIII)tetraoxide (OsO4) to enhance contrast and to allow it to be detectable in TEM. Dynamic mechanical measurements confirmed interaction between polystyrene (PS) and wood in the PE/PS/WF system. The tan d peak of PS was shifted about 10°C to a higher temperature and also broadened when wood flour was added in the LDPE/PS blend.

Place, publisher, year, edition, pages
1998. Vol. 52, no 6, p. 661-666
Keywords [en]
Copolymer compatibilizer, Dynamic mechanical thermal analysis (DMTA), Transmission electron microscopy (TEM), Wood flour/thermoplastic composite
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13234OAI: oai:DiVA.org:ri-13234DiVA, id: diva2:973430
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-11-21Bibliographically approved

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