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European Journal of Wood and Wood Products

Erschienen in:

01.11.2010 | Originals Originalarbeiten

Colour stabilisation of wood composites using polyethylene glycol and melamine resin

verfasst von: Dr. Uwe Müller, Melanie Steiner

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 4/2010

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Abstract

Photo-yellowing of native and polyethylene glycol (PEG) modified wood and wood/melamine resin composites was studied by means of FTIR-ATR technique and colourimetry (CIE L^*a^*b^* method). The discolouration \( \mathrm{\Delta } \)E shows a systematic asymptotic trend towards higher values with increasing irradiation time. Yellowing proceeds faster in natural wood compared to wood/melamine resin composites. Nevertheless, long-term irradiation experiments show that the total colour shift is similar for both.

Discolouration is significantly reduced by PEG treatment. In comparison to untreated wood, both glycol and melamine resin mainly reduce the irradiation-induced yellow shift. Moreover, PEG also shows an effect on the redness shift. Both effects result in decreased yellowing of the composite surface. An influence of the molecular weight of PEG was detected.

Vorheriger Artikel Characterization of a formaldehyde-free cornstarch-tannin wood adhesive for interior plywood

Nächster Artikel Untersuchung von Buchenschnittholz (Fagus sylvatica  L.) hinsichtlich der Eignung für Brettschichtholz

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Titel: Colour stabilisation of wood composites using polyethylene glycol and melamine resin
verfasst von: Dr. Uwe Müller
Melanie Steiner
Publikationsdatum: 01.11.2010
Verlag: Springer-Verlag
Erschienen in: European Journal of Wood and Wood Products / Ausgabe 4/2010
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-009-0386-1

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