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Semi-rigid biopolyurethane foams based on palm-oil polyol and reinforced with cellulose nanocrystals
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Centre for Biocomposites and Biomaterials Processing, University of Toronto, University of Toronto, Centre for Biocomposites and Biomaterials Processing, Faculty of Forestry, University of Toronto.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
2016 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 83, p. 56-62Article in journal (Refereed) Published
Abstract [en]

In this study, water-blown biopolyurethane (BPU) foams based on palm oil were developed and cellulose nanocrystals (CNC) were incorporated to improve the mechanical properties of the foams. In addition, the foams were compared with petroleum polyurethane (PPU) foam. The foam properties and cellular morphology were characterized. The obtained results revealed that a low-density, semi-rigid BPU foam was prepared using a new formulation. CNC as an additive significantly improved the compressive strength from 54 to 117 kPa. Additionally, cyclic compression tests indicated that the addition of CNC increased the rigidity, leading to decreased deformation resilience. The dimensional stability of BPU foams was increased with increasing CNC concentration for both heating and freezing conditions.Therefore, the developed BPU nanocomposite foams are expected to have great potential as core material in composite sandwich panels as well as in other construction materials.

Place, publisher, year, edition, pages
2016. Vol. 83, p. 56-62
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-9737DOI: 10.1016/j.compositesa.2015.06.008ISI: 000372383800006Scopus ID: 2-s2.0-84958907474Local ID: 8672ad6d-7686-4d53-a795-a1b541c3dd70OAI: oai:DiVA.org:ltu-9737DiVA, id: diva2:982675
Note
Validerad; 2016; Nivå 2; Bibliografisk uppgift: Special Issue on Biocomposites; 20150622 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Zhou, XiaojianOksman, Kristiina

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