Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wood protection grows on trees. Ligning filler enhances performance of alkyd wood coating
Ecological concerns have generated increasing inter est in products based on renewable resources Thus, natural fibres and biodegradable polymers such as lignin are considered to be environmentally desirable alternatives to artificial materials Lignin in particular has potential as a complexing and sorption agent. Soda lignin was extracted from the black liquor of oil palm empty fruit bunch (EFB) fibers using 20 % sulfuric acid. This lignin was used as filler in a paint based on an alkyd resin obtained from soya oil, phthalic anhydride and glycerol by the monoglyceride process. A study comparing the opacity, surface drying time, gloss, adhesion, water absorption, hardness and weathering of lignin-based paint and non-lignin paint films on hardwood surfaces was performed. The degree of dispersion of the lignin-based paint was appropriate for use as an undercoat. The incorporation of lignin led to significant improvements in the drying time, adhesion and hardness. The colour of the paints was darker and its opacity was higher. Notably, the presence of lignin in the paint reduced the swelling of wood substrates in both total immersion tests and outdoor exposure.
Wood protection grows on trees. Ligning filler enhances performance of alkyd wood coating
Ecological concerns have generated increasing inter est in products based on renewable resources Thus, natural fibres and biodegradable polymers such as lignin are considered to be environmentally desirable alternatives to artificial materials Lignin in particular has potential as a complexing and sorption agent. Soda lignin was extracted from the black liquor of oil palm empty fruit bunch (EFB) fibers using 20 % sulfuric acid. This lignin was used as filler in a paint based on an alkyd resin obtained from soya oil, phthalic anhydride and glycerol by the monoglyceride process. A study comparing the opacity, surface drying time, gloss, adhesion, water absorption, hardness and weathering of lignin-based paint and non-lignin paint films on hardwood surfaces was performed. The degree of dispersion of the lignin-based paint was appropriate for use as an undercoat. The incorporation of lignin led to significant improvements in the drying time, adhesion and hardness. The colour of the paints was darker and its opacity was higher. Notably, the presence of lignin in the paint reduced the swelling of wood substrates in both total immersion tests and outdoor exposure.
Wood protection grows on trees. Ligning filler enhances performance of alkyd wood coating
Holzschutz wächst auf Bäumen: Lignin-Füller verstärken das Verhalten einer Alkyd-Holzbeschichtung
Mohammed Issam, A. (Autor:in) / Asniza, M. (Autor:in) / Abdul Khalil, H.P.S. (Autor:in)
European Coatings Journal ; 24-27
2010
4 Seiten, 5 Bilder, 2 Tabellen
Aufsatz (Zeitschrift)
Englisch
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