論文

査読有り
2015年

Effects of Ethanol-Supplemented Phenol-Resorcinol-Formaldehyde Resin on Formaldehyde and Acetaldehyde Emissions from Glued-Laminated Timbers

FOREST PRODUCTS JOURNAL
  • Shin-ichiro Tohmura
  • ,
  • Kohta Miyamoto
  • ,
  • Akio Inoue

65
1-2
開始ページ
31
終了ページ
37
記述言語
英語
掲載種別
DOI
10.13073/FPJ-D-14-00043
出版者・発行元
FOREST PRODUCTS SOC

Aldehyde emissions from glued-laminated timbers bonded with phenol-resorcinol-formaldehyde (PRF) resin adhesives, some of which included ethanol as a solvent, were investigated. Four commercial ethanol-free and three laboratory-made PRF resins with varying ethanol content were prepared and used to manufacture sugi (Cryptomeria japonica D. Don) gluedlaminated timbers. The aldehyde emissions from these timbers were measured by a Japanese Industrial Standard small chamber method over an extended period. Three test samples, each with a differently oriented sealed surface, were also prepared for discussion of the mechanism. No relationship was observed between formaldehyde emission and either ethanol content or the orientation of the exposed area. However, acetaldehyde emission was significantly influenced by both parameters. When a cross-sectional surface was exposed, acetaldehyde emission decreased rapidly; however, conversely, when a cross-sectional surface was sealed, acetaldehyde emission remained constant and even increased gradually over an extended period, which was attributed to excessive acetaldehyde. When ethanol was present in adhesives in excess of 5 percent of the resin weight, excessive acetaldehyde may have been produced by enzyme alcohol dehydrogenase as previously reported and may spread into the wood, whereupon the acetaldehyde may have been emitted mainly from the cross-sectional surface rather than the other sides.

Web of Science ® 被引用回数 : 3

リンク情報
DOI
https://doi.org/10.13073/FPJ-D-14-00043
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000351190600006&DestApp=WOS_CPL

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