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Exploitation of liquefied wood waste for binding recycled wood particleboards

  • Dominika Janiszewska EMAIL logo , Iwona Frąckowiak und Karolina Mytko
Veröffentlicht/Copyright: 23. April 2016
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Abstract

Four types of industrial waste from wood processing, namely a mixed hardwood-softwood powder, pine and beech sawdust, and bark were liquefied and tested as binders for particleboards (PB) made of recycled wood. The liquefaction reaction was carried out at elevated temperature with a mixture of solvents from polyhydroxyl alcohols such as glycerine and propylene glycol, and p-toluenesulfonic acid as a catalyst. Then the liquefied woods (LWs) were characterized in terms of their suitability for PB production as a partial substitute for synthetic urea-formaldehyde (UF) resin. The standard properties of PBs such as tensile strength, bending strength and modulus of elasticity, density, moisture content, swelling after 24 h, water absorption, and formaldehyde content were measured. All tests were performed in comparison to a standard PB bonded by UF resin. It was demonstrated that the substitution of UF resin up to 20% of LW did not have a significant effect on the mechanical properties. PB made of recycled wood produced with LW possessed good mechanical properties that meet the European standard quality demands for PBs.

Acknowledgments

This research was carried out within the statutory project ST-2-BMD/2015, financed by the Polish Ministry of Science and Higher Education and partially within ReGaP project “Recycling of used Wood in Germany and Poland” financed within the framework of Polish-German cooperation for sustainable development by the Ministry of Science and Higher Education and the German Federal Ministry of Education and Research. The authors would like to acknowledge the contribution of the COST Action FP1105.

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Received: 2016-2-22
Accepted: 2016-3-22
Published Online: 2016-4-23
Published in Print: 2016-12-1

©2016 Walter de Gruyter GmbH, Berlin/Boston

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