Evaluation of formaldehyde emission of pine and wattle tannin-based adhesives by gas chromatography

S. Kim, H. J. Kim

Research output: Contribution to specialist publicationArticle

20 Citations (Scopus)

Abstract

Formaldehyde emissions from wood particleboards bonded with pine and wattle tannin-based adhesives, using hardeners paraformaldehyde, hexamethylenetetramine and TN (tris(hydroxyl)nitromethan), were measured by the perforator method (DIN EN 120-European Committee For Standardization 1991). All particleboards made using the wattle tannin systems with the three different hardeners were satisfied grade E1, while in the case of pine tannin only the use of the hexamine hardener led to grade E1 being satisfied. This tendency was attributed to the curing mechanism of the hardener, the reactivity of the tannin molecule toward formaldehyde and the fast reactivity toward formaldehyde of pine tannin, due to the inclusion of phloroglucinolic A-rings within its molecular structure. Hexamine was effective at reducing formaldehyde emission in tannin-based adhesives when used as the hardener. Being a more sensitive and advanced method, it was also used. The samples used for gas chromatography were gathered during the perforator method. The formaldehyde emission levels obtained from gas chromatography were similar to those obtained from the perforator method.

Original languageEnglish
Pages101-106
Number of pages6
Volume62
No.2
Specialist publicationHolz als Roh - und Werkstoff
DOIs
Publication statusPublished - 2004 Apr 1

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All Science Journal Classification (ASJC) codes

  • Forestry
  • Materials Science(all)

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