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Abstract
This study presents a comparison of the effect of various wood fibre types in polylactic acid and polypropylene composites produced by melt processing. The study also reveals the reinforcing effect of pelletised wood fibres compared to conventionally used wood flour or refined fibres. Composites containing 30 wt.% of chemical pulps, thermomechanical pulp and wood flour were produced by compounding and injection moulding. Fibre morphologies were analysed before and after melt processing. The dispersion of the fibres and mechanical performance of the composites were also investigated. Fibre length was reduced during melt processing steps, reduction being higher with longer fibres. Wood fibres provided clearly higher plastic reinforcement than wood flour. Comparing the wood fibre types, TMP fibres provided the highest improvement in mechanical properties in polylactic acid composites with uniform fibre dispersion. In polypropylene composites, fibre selection is not as crucial.
Original language | English |
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Pages (from-to) | 13-22 |
Number of pages | 10 |
Journal | Composites Part A: Applied Science and Manufacturing |
Volume | 61 |
DOIs | |
Publication status | Published - 2014 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Wood
- fibres
- thermoplastic resin
- mechanical properties
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Dive into the research topics of 'Wood based PLA and PP composites: Effect of fibre type and matrix polymer on fibre morphology, dispersion and composite properties'. Together they form a unique fingerprint.Projects
- 1 Finished
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BioStruct: Complex Structural and Multifunctional Parts from enhanced Wood-Based Composites – eWPC
Peltola, H.
1/09/08 → 31/08/12
Project: EU project