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Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate

The potential of using residual softwood fibers from the pulp and paper industry for producing eco-friendly, zero-formaldehyde fiberboard panels, bonded with calcium lignosulfonate (CLS) as a lignin-based, formaldehyde free adhesive, was investigated in this work. Fiberboard panels were manufactured...

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Autores principales: Antov, Petar, Krišt’ák, L’uboš, Réh, Roman, Savov, Viktor, Papadopoulos, Antonios N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7924858/
https://www.ncbi.nlm.nih.gov/pubmed/33669944
http://dx.doi.org/10.3390/polym13040639
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author Antov, Petar
Krišt’ák, L’uboš
Réh, Roman
Savov, Viktor
Papadopoulos, Antonios N.
author_facet Antov, Petar
Krišt’ák, L’uboš
Réh, Roman
Savov, Viktor
Papadopoulos, Antonios N.
author_sort Antov, Petar
collection PubMed
description The potential of using residual softwood fibers from the pulp and paper industry for producing eco-friendly, zero-formaldehyde fiberboard panels, bonded with calcium lignosulfonate (CLS) as a lignin-based, formaldehyde free adhesive, was investigated in this work. Fiberboard panels were manufactured in the laboratory by applying CLS addition content ranging from 8% to 14% (on the dry fibers). The physical and mechanical properties of the developed composites, i.e., water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), as well as the free formaldehyde emission, were evaluated according to the European norms. In general, only the composites, developed with 14% CLS content, exhibited MOE and MOR values, comparable with the standard requirements for medium-density fiberboards (MDF) for use in dry conditions. All laboratory-produced composites demonstrated significantly deteriorated moisture-related properties, i.e., WA (24 h) and TS (24 h), which is a major drawback. Noticeably, the fiberboards produced had a close-to-zero formaldehyde content, reaching the super E0 class (≤1.5 mg/100 g), with values, ranging from 0.8 mg/100 g to 1.1 mg/100 g, i.e., equivalent to formaldehyde emission of natural wood. The amount of CLS adhesive had no significant effect on formaldehyde content.
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spelling pubmed-79248582021-03-03 Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate Antov, Petar Krišt’ák, L’uboš Réh, Roman Savov, Viktor Papadopoulos, Antonios N. Polymers (Basel) Article The potential of using residual softwood fibers from the pulp and paper industry for producing eco-friendly, zero-formaldehyde fiberboard panels, bonded with calcium lignosulfonate (CLS) as a lignin-based, formaldehyde free adhesive, was investigated in this work. Fiberboard panels were manufactured in the laboratory by applying CLS addition content ranging from 8% to 14% (on the dry fibers). The physical and mechanical properties of the developed composites, i.e., water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), as well as the free formaldehyde emission, were evaluated according to the European norms. In general, only the composites, developed with 14% CLS content, exhibited MOE and MOR values, comparable with the standard requirements for medium-density fiberboards (MDF) for use in dry conditions. All laboratory-produced composites demonstrated significantly deteriorated moisture-related properties, i.e., WA (24 h) and TS (24 h), which is a major drawback. Noticeably, the fiberboards produced had a close-to-zero formaldehyde content, reaching the super E0 class (≤1.5 mg/100 g), with values, ranging from 0.8 mg/100 g to 1.1 mg/100 g, i.e., equivalent to formaldehyde emission of natural wood. The amount of CLS adhesive had no significant effect on formaldehyde content. MDPI 2021-02-21 /pmc/articles/PMC7924858/ /pubmed/33669944 http://dx.doi.org/10.3390/polym13040639 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Antov, Petar
Krišt’ák, L’uboš
Réh, Roman
Savov, Viktor
Papadopoulos, Antonios N.
Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
title Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
title_full Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
title_fullStr Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
title_full_unstemmed Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
title_short Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
title_sort eco-friendly fiberboard panels from recycled fibers bonded with calcium lignosulfonate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7924858/
https://www.ncbi.nlm.nih.gov/pubmed/33669944
http://dx.doi.org/10.3390/polym13040639
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