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Cellulose Fibre-Reinforced Biofoam for Structural Applications

Department of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, 20500 Turku, Finland, [email protected]
Department of Chemistry, University of Helsinki, A.I. Virtasen Aukio 1, 00100 Helsinki, Finland, [email protected]
Department of Industrial Chemistry and Reaction Engineering, Åbo Akademi, Biskopsgatan 8, 20500 Turku, Finland
Department of Prosthetic Dentistry and Biomaterials Science, University of Turku, Itäinen Pitkäkatu 4 B, 20500 Turku, Finland
Department of Chemical Engineering, KU Leuven, 3000 Leuven, Belgium
Author to whom correspondence should be addressed.
Academic Editor: Kim L. Pickering
Materials 2017, 10(6), 619;
Received: 17 March 2017 / Revised: 22 May 2017 / Accepted: 2 June 2017 / Published: 6 June 2017
(This article belongs to the Section Biomaterials)
Traditionally, polymers and macromolecular components used in the foam industry are mostly derived from petroleum. The current transition to a bio-economy creates demand for the use of more renewable feedstocks. Soybean oil is a vegetable oil, composed mainly of triglycerides, that is suitable material for foam production. In this study, acrylated epoxidized soybean oil and variable amounts of cellulose fibres were used in the production of bio-based foam. The developed macroporous bio-based architectures were characterised by several techniques, including porosity measurements, nanoindentation testing, scanning electron microscopy, and thermogravimetric analysis. It was found that the introduction of cellulose fibres during the foaming process was necessary to create the three-dimensional polymer foams. Using cellulose fibres has potential as a foam stabiliser because it obstructs the drainage of liquid from the film region in these gas-oil interfaces while simultaneously acting as a reinforcing agent in the polymer foam. The resulting foams possessed a porosity of approximately 56%, and the incorporation of cellulose fibres did not affect thermal behaviour. Scanning electron micrographs showed randomly oriented pores with irregular shapes and non-uniform pore size throughout the samples. View Full-Text
Keywords: AESO; bio-based; cellulose; foam; renewable resource AESO; bio-based; cellulose; foam; renewable resource
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MDPI and ACS Style

Obradovic, J.; Voutilainen, M.; Virtanen, P.; Lassila, L.; Fardim, P. Cellulose Fibre-Reinforced Biofoam for Structural Applications. Materials 2017, 10, 619.

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