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Effect of temperature, plastic type and virginity on the water uptake of sawdust/plastic composites

Einfluss von Temperatur, Art und Ausgangsmaterial des Kunststoffs auf die Wasseraufnahme von Holz-Kunststoff-Verbundplatten

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Abstract

Water absorption of wood plastic composites (WPCs) manufactured from sawdust and virgin and recycled plastics (HDPE and PP) was studied. Wood flour was prepared from sawdust and mixed with different virgin or recycled plastics at 50% by weight fiber loading. The mixed materials were compression molded into panels. Water absorption of manufactured WPCs was determined after 2 and 24 h immersion in distilled water at different temperatures (25, 50 and 70 °C). WPCs containing recycled plastics exhibited higher water absorption especially when the two recycled plastics were mixed together. Immersion temperature had a significant effect on water absorption.

Zusammenfassung

Die Wasseraufnahme von aus Sägespänen und Primär- sowie Recyclingkunststoff (HDPE und PP) hergestellten Holz-Kunststoff-Verbundplatten wurde untersucht. Aus Sägespänen wurde Holzmehl hergestellt und mit verschiedenen Primär- und Recyclingkunststoffen mit einem Masseanteil von 50% vermischt. Das Materialgemisch wurde zu Platten formgepresst. Die Wasseraufnahme der hergestellten WPCs wurde nach 2- und 24-h Lagerung in destilliertem Wasser bei unterschiedlichen Temperaturen (25, 50 und 70 °C) untersucht. Dabei war die Wasseraufnahme von WPCs aus Recyclingkunststoff höher, insbesondere wenn die beiden Recyclingkunststoffe gemischt waren. Die Temperatur bei der Wasserlagerung hatte großen Einfluss auf die Wasserabsorption.

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Authors and Affiliations

  1. Department of Wood and Paper Science and Technology, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran

    Saeed Kazemi Najafi & Elham Hamidina

  2. Department of Wood and Paper Science and Technology, College of Natural Resources, University of Tehran, Karaj, Iran

    Mehdi Tajvidi

Authors
  1. Saeed Kazemi Najafi
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  2. Mehdi Tajvidi
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  3. Elham Hamidina
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Correspondence to Saeed Kazemi Najafi.

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Kazemi Najafi, S., Tajvidi, M. & Hamidina, E. Effect of temperature, plastic type and virginity on the water uptake of sawdust/plastic composites . Holz Roh Werkst 65, 377–382 (2007). https://doi.org/10.1007/s00107-007-0176-6

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  • DOI: https://doi.org/10.1007/s00107-007-0176-6

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