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Photo- and thermo-oxidation of polypropylene, recycled polypropylene and polylactide biocomposites in a microenvironment chamber
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-2139-7460
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-5394-7850
2010 (English)In: Polymers from Renewable Resources, ISSN 2041-2479, Vol. 1, no 1, 1-15 p.Article in journal (Refereed) Published
Abstract [en]

This work presents and discusses the photo- and thermo-oxidation of some sustainable biocomposites based on biodegradable materials from renewable resources and virgin and recycled petroleum-based polymeric materials as matrix and reinforced with natural fibres. PP/wood fl our, recycled PP/cellulose and PLA/wood fl our composites were degraded by photo-oxidation in a microenvironment chamber, in parallel thermo-oxidation was performed in a forced-ventilation oven. Physical and chemical property changes were monitored by tensile testing, DSC, FTIR and SEM.

Both PPW and recPPcell composites showed deterioration of the mechanical properties after 15 days of thermo-oxidation, indicating that the incorporated natural fi bres infl uenced the thermal stability of the whole composite. PLAW showed a smaller increase in crystallinity (13%) and a decrease in melt temperature than the corresponding neat PLA. The advantages of reinforcement of PLA by natural fi bres are shown by the dramatically improved thermal properties of PLAW compared to the neat polymer.

Place, publisher, year, edition, pages
iSmithers , 2010. Vol. 1, no 1, 1-15 p.
Keyword [en]
Sustainable biocomposites, microenvironment chamber, polymer-matrix composites (PMCs), wood, photo-oxidation, thermo-oxidation, physical properties
National Category
Polymer Technologies
URN: urn:nbn:se:kth:diva-81077ScopusID: 2-s2.0-84874011072OAI: diva2:497159
QC 20120213Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2012-02-13Bibliographically approved

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Strömberg, EmmaKarlsson, Sigbritt
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