Effect of processing conditions on wood and glass fiber length attrition during twin screw composite compounding |
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| Authors: | Alan Dickson Laura Teuber Marc Gaugler David Sandquist |
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| Affiliation: | 1. Scion, Private Bag 3020, Rotorua, 3046 New Zealand;2. Section of Wood Biology and Wood Products, DFG RTG 1703 “Resource Efficiency in Interorganizational Networks,” Georg-August University Göttingen, Büsgenweg 4, 37077 Göttingen, Germany;3. VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, 02044 VTT Espoo, Finland |
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| Abstract: | In this study, we compare the effect of twin-screw extrusion processing on the attrition of wood fibers (WFs) with glass fiber. The effects of process variables and screw design on fiber length were investigated by performing a range of dead-stop experiments where the extruder was stopped, opened-up, and compound removed from the screw elements. Fibers, chemically extracted from the polypropylene matrix, were analyzed for length and width using a commercial fiber analyzer. It was found that WF length attrition and composite properties were less affected by screw design and twin-screw processing conditions (feed rate and screw speed) than glass fiber. Length weighted fiber length and X50 length (a measure used in particle size analysis) were equally correlated with process conditions and composite performance for both fiber types. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48551. |
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| Keywords: | cellulose and other wood products composites extrusion fibers |
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