Journal
COMPOSITES PART B-ENGINEERING
Volume 92, Issue -, Pages 19-27Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2016.02.032
Keywords
Polymer-matrix composites (PMCs); Wood; Mechanical properties; Rheological properties; Cellulose fibers
Funding
- European Community [CP-IP 228589-2 AFORE]
- Academy of Finland [252564]
- Academy of Finland (AKA) [252564, 252564] Funding Source: Academy of Finland (AKA)
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Cellulose fibers obtained by organosolv process were used in preparing PLA/fiber composites. In an attempt to improve the adhesion between the fibers and the polymer matrix, the cellulose fibers were treated chemically using stearoyl chloride as well as enzymatically by laccase. The addition of the cellulose fibers to the PLA matrix had a positive effect on some of the mechanical properties of the composites, while some properties were compromised. In addition, the thermal properties were improved, while the rheological properties were decreased. Generally, the fiber modifications did not have the desired effect of improving the mechanical properties further, while for the thermal properties, there was a significant difference when chemically modified fibers were used. Accelerated weathering generally led to the deterioration of the composites properties. However, some properties were better preserved with the inclusion of modified fibers into the PLA matrix, especially with the enzymatically modified fibers. (C) 2016 Elsevier Ltd. All rights reserved.
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