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

Polymers, 2021-02, Vol.13 (4), p.639 [Peer Reviewed Journal]

2021. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2021 by the authors. 2021 ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym13040639 ;PMID: 33669944

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Title:
Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate
Author: Antov, Petar ; Krišt'ák, L'uboš ; Réh, Roman ; Savov, Viktor ; Papadopoulos, Antonios N
Subjects: Adhesives ; Bend strength ; Bending modulus ; bioadhesives ; By products ; Calcium ; calcium lignosulfonate ; Cellulose ; Composite materials ; Emission analysis ; Environmental impact ; fiberboards ; Fibers ; Formaldehyde ; Lignin ; Lignocellulose ; Lignosulfonates ; Manufacturing ; Mechanical properties ; Modulus of elasticity ; Norms ; Panels ; Paper board ; Paper mills ; Phenols ; Physical properties ; Pulp & paper industry ; recycled fibers ; Recycling ; Sustainable materials ; Water absorption ; Wood composites ; wood-based panels ; zero-formaldehyde emission
Is Part Of: Polymers, 2021-02, Vol.13 (4), p.639
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.
Publisher: Switzerland: MDPI AG
Language: English
Identifier: ISSN: 2073-4360
EISSN: 2073-4360
DOI: 10.3390/polym13040639
PMID: 33669944
Source: Geneva Foundation Free Medical Journals at publisher websites
PubMed Central
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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

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