Título: Wood Science and TechnologyImportada do Authenticus Pesquisar Publicações da Revista

Vol. 47 Nº 6

Páginas: 1261-1272

ISSN: 0043-7719

Editora: Springer Nature

ISI Web of Knowledge - 68 Citações

ISI Web of Science

Scopus - 74 Citações

INSPEC

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

ID Authenticus: P-006-6E3

DOI: 10.1007/s00226-013-0573-4

Abstract (EN): This work examines the performance of three formaldehyde scavengers in wood-based panels. Sodium metabisulfite, ammonium bisulfite and urea were applied in different physical forms during particleboard production, and the resulting physico-mechanical properties (internal bond strength, thickness swelling, density and moisture content) and formaldehyde emission levels were compared. Formaldehyde content was measured using the perforator method, and formaldehyde emission was evaluated both by desiccator and gas analysis methods. The chemical reactions involved in each formaldehyde scavenging process are proposed and discussed. The tested scavengers showed distinct performances under the different emission testing conditions, which were interpreted in terms of the stability of the chemical compounds formed upon formaldehyde capture. Sodium metabisulfite proved to be an excellent scavenger for all formaldehyde methods allowing the production of particleboard panels with zero formaldehyde emission.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12