Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 83, Issue -, Pages 113-119Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2015.03.028
Keywords
Mechanical properties; Electron microscopy; Injection molding; Extrusion
Funding
- Hessen State Ministry of Higher Education, Research and the Arts
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The utilization of bio-based engineering polymers as a matrix material for cellulosic fiber reinforced composites has become an important focus in materials research. This is due to a rising demand for sustainable materials from renewable resources. In addition to this aspect, the bio-based materials provide an advantage for lightweight applications with their lower density. In this investigation, the completely bio-based polyamide 10.10, with a melting point above 200 degrees C, was used as a polymer matrix. Chopped man-made cellulose fibers (Cordenka CR-Type) were investigated as reinforcement for use in injection molded applications. A co-rotating twin-screw extruder with a screw-diameter of 18 mm was used for compounding. It was verified that reinforcing polyamide 10.10 with 20 wt% and 30 wt% cellulosic fibers is possible, resulting in an increase of impact and tensile properties. Furthermore, it was shown that the temperatures and screw-configurations of the twin-screw extruder only result in different fiber length distributions but in minor differences of the morphological structure and mechanical properties of PA 10.10 with 20 wt% fibers. Compounds with 30 wt% cellulose fibers show significant higher impact properties that those with 30 wt% glass fibers. (C) 2015 Elsevier Ltd. All rights reserved.
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