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Study of thermal properties of wood plastic composite reinforced with cellulose micro fibril and nano inorganic fiber filler

Untersuchung der thermischen Eigenschaften von Holz-Kunststoff-Verbundwerkstoffen verstärkt mit Cellulosemikrofibrillen und einem Nanofüllstoff aus anorganischen Fasern

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Abstract

Wood plastic composite was prepared by mixing wood fibrils into polypropylene with an internal mixer. Nano wollastonite was dispersed in the composite to compensate for the poor thermal characteristics of the product. Thermal properties of the obtained composite were studied by different techniques including thermo gravimetrical analysis, differential scanning calorimetry, limited oxygen index and oxidative induction time. It was found that introduction of nano wollastonite increased thermal stability as well as crystallinity in the composite due to high specific surface area of nano inorganic fiber filler. Also, flammability resistance and the required oxygen content to burn the composite were enhanced as wollastonite was added to the wood plastic composite. However, wollastonite increased oxidation of the sample because it is composed of metal oxides.

Zusammenfassung

Zur Herstellung von Holz-Kunststoff-Verbundwerkstoffen wurden Holzfibrillen mit Polypropylen vermischt. Dem Verbundwerkstoff wurde Nanowollastonit zugegeben, um dessen schlechte thermische Eigenschaften zu verbessern. Die thermischen Eigenschaften des so hergestellten Werkstoffes wurden anhand Thermogravimetrischer Analyse (TGA), Differenzialrasterkalorimetrie (DSC), Sauerstoffminimalwert (LOI) und oxidativer Induktionszeit (OIT) untersucht. Es wurde gezeigt, dass die thermische Stabilität und die Kristallinität im Verbundwerkstoff durch Zugabe von Nano-Wollastonit aufgrund seiner hohen spezifischen Oberfläche verbessert wurden. Zugleich wurden der Entflammbarkeitswiderstand und der zum Verbrennen des Verbundwerkstoffs benötigte Sauerstoffbedarf durch Zugabe von Wollastonit erhöht. Allerdings erhöhte Wollastonit die Oxidation der Prüfkörper, da es aus Metalloxiden besteht.

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Authors and Affiliations

  1. Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran

    Z. Farhadinejad & M. Ehsani

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

    B. Khosravian & G. Ebrahimi

Authors
  1. Z. Farhadinejad
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  2. M. Ehsani
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  3. B. Khosravian
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  4. G. Ebrahimi
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Correspondence to M. Ehsani.

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Farhadinejad, Z., Ehsani, M., Khosravian, B. et al. Study of thermal properties of wood plastic composite reinforced with cellulose micro fibril and nano inorganic fiber filler. Eur. J. Wood Prod. 70, 823–828 (2012). https://doi.org/10.1007/s00107-012-0630-y

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  • DOI: https://doi.org/10.1007/s00107-012-0630-y

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