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Diotomaceous earth as an inorganic additive to reduce formaldehyde emmissions from particleboards
University of Göttingen, Germany.
Universität für Bodenkultur Vienna, Austria.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology. (GoFP)ORCID iD: 0000-0002-6909-2025
2017 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 12, no 2, p. 92-97Article in journal (Refereed) Published
Abstract [en]

The presented research is about the use of a new type of a functional inorganic additive in particleboards, for the purpose of reducing free formaldehyde releases. One-layered particleboards were prepared in the laboratory by mixing industrial wood particles and urea-formaldehyde resin. Natural, abundantly and cheaply available nano-mesoporous diatomaceous earth (DE) was used, without and in combination with urea as a scavenger. Silica quartz sand was also added as a nonporous analogy. Particleboards were pressed at two press factors (9 and 15 s/mm). Formaldehyde release was determined using the rapid 3-hour-flask method (DIN EN 717-3). As a result, DE additions insignificantly reduced bending properties of particleboards. Internal bonding was in part significantly lowered. The particleboard produced with 3% urea loaded on 5% DE prior to application almost halved (–45%) the formaldehyde release. Formaldehyde release was on the average 17% lower when pressed at 15 s/mm instead of 9 s/mm. By loading urea onto the nano-mesoporous structure of DE, an improved scavenging function of urea could be shown.

Place, publisher, year, edition, pages
Taylor & Francis, 2017. Vol. 12, no 2, p. 92-97
Keywords [en]
Particleboard, formaldehyde, scavenger, diatomaceous earth, flask method
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-41902DOI: 10.1080/17480272.2015.1040066ISI: 000396834400004Scopus ID: 2-s2.0-84932108839OAI: oai:DiVA.org:lnu-41902DiVA, id: diva2:801266
Available from: 2015-04-08 Created: 2015-04-08 Last updated: 2019-08-29Bibliographically approved

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Adamopoulos, Stergios

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