Photostability of acetylated wood coated with nano zinc oxide

Abstract: Chemical modification with acetic anhydride is an effective method to stabilise wood against dimensional movement and improve decay resistance of wood. It has also been reported to retard UV light induced color darkening on wood surface. Coatings of wood surfaces with certain nano metal ox...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Nagarajappa,Giridhar B, Nair,Sreeja, Srinivas,Kavyashree, Subba Rao,Anantha N, Pandey,Krishna K.
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2020
Materias:	Chemical modification nano material photodegradation wood surface Wrightia tinctorial zinc oxide.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2020000300365
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-221X2020000300365
record_format	dspace
spelling	oai:scielo:S0718-221X20200003003652020-06-26Photostability of acetylated wood coated with nano zinc oxideNagarajappa,Giridhar BNair,SreejaSrinivas,KavyashreeSubba Rao,Anantha NPandey,Krishna K. Chemical modification nano material photodegradation wood surface Wrightia tinctorial zinc oxide. Abstract: Chemical modification with acetic anhydride is an effective method to stabilise wood against dimensional movement and improve decay resistance of wood. It has also been reported to retard UV light induced color darkening on wood surface. Coatings of wood surfaces with certain nano metal oxides have also shown promise as UV screening agent. In this work, we have evaluated synergistic effect of acetylation of wood and application of nano material on wood surfaces to enhance their UV stability. Photo-stability of acetylated Wrightia tinctoria wood coated with zinc oxide (ZnO) nanodispersion was evaluated by irradiating these wood specimens to UV radiation in an accelerated weathering tester. Acetylation of wood with acetic anhydride exhibited photo-bleaching and inhibited light-induced color darkening observed in unmodified wood. Coating of unmodified and modified wood surfaces with ZnO nanodispersion reduced photo-discolouration and degradation of wood polymers. The photo-bleaching observed in chemically modified wood upon light irradiation was further enhanced by application of nano coating on wood surfaces.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.22 n.3 20202020-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2020000300365en10.4067/S0718-221X2020005000310
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chemical modification nano material photodegradation wood surface Wrightia tinctorial zinc oxide.
spellingShingle	Chemical modification nano material photodegradation wood surface Wrightia tinctorial zinc oxide. Nagarajappa,Giridhar B Nair,Sreeja Srinivas,Kavyashree Subba Rao,Anantha N Pandey,Krishna K. Photostability of acetylated wood coated with nano zinc oxide
description	Abstract: Chemical modification with acetic anhydride is an effective method to stabilise wood against dimensional movement and improve decay resistance of wood. It has also been reported to retard UV light induced color darkening on wood surface. Coatings of wood surfaces with certain nano metal oxides have also shown promise as UV screening agent. In this work, we have evaluated synergistic effect of acetylation of wood and application of nano material on wood surfaces to enhance their UV stability. Photo-stability of acetylated Wrightia tinctoria wood coated with zinc oxide (ZnO) nanodispersion was evaluated by irradiating these wood specimens to UV radiation in an accelerated weathering tester. Acetylation of wood with acetic anhydride exhibited photo-bleaching and inhibited light-induced color darkening observed in unmodified wood. Coating of unmodified and modified wood surfaces with ZnO nanodispersion reduced photo-discolouration and degradation of wood polymers. The photo-bleaching observed in chemically modified wood upon light irradiation was further enhanced by application of nano coating on wood surfaces.
author	Nagarajappa,Giridhar B Nair,Sreeja Srinivas,Kavyashree Subba Rao,Anantha N Pandey,Krishna K.
author_facet	Nagarajappa,Giridhar B Nair,Sreeja Srinivas,Kavyashree Subba Rao,Anantha N Pandey,Krishna K.
author_sort	Nagarajappa,Giridhar B
title	Photostability of acetylated wood coated with nano zinc oxide
title_short	Photostability of acetylated wood coated with nano zinc oxide
title_full	Photostability of acetylated wood coated with nano zinc oxide
title_fullStr	Photostability of acetylated wood coated with nano zinc oxide
title_full_unstemmed	Photostability of acetylated wood coated with nano zinc oxide
title_sort	photostability of acetylated wood coated with nano zinc oxide
publisher	Universidad del Bío-Bío
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2020000300365
work_keys_str_mv	AT nagarajappagiridharb photostabilityofacetylatedwoodcoatedwithnanozincoxide AT nairsreeja photostabilityofacetylatedwoodcoatedwithnanozincoxide AT srinivaskavyashree photostabilityofacetylatedwoodcoatedwithnanozincoxide AT subbaraoananthan photostabilityofacetylatedwoodcoatedwithnanozincoxide AT pandeykrishnak photostabilityofacetylatedwoodcoatedwithnanozincoxide
_version_	1714202690511175680

Photostability of acetylated wood coated with nano zinc oxide

Ejemplares similares