Material resistance of weathered wood-plastic composites against fungal decay

Autor:	Ina Stephan, Matthias Noll, Annette Naumann
Rok vydání:	2012
Předmět:	Biomaterials Nutrient Chemistry Material Degradation Weathering Leaching (metallurgy) Fourier transform infrared spectroscopy Composite material Waste Management and Disposal Microbiology Water content Water spray Fungal hyphae
Zdroj:	International Biodeterioration & Biodegradation. 75:28-35
ISSN:	0964-8305
DOI:	10.1016/j.ibiod.2012.08.004
Popis:	Material performance testing of wood-plastic composites (WPC) requires adequate and time-efficient evaluation of the resistance against fungal colonisation and decay. This study investigates the effects of weathering on WPCs and subsequent material degradation by fungi. Weathering using UV radiation, water spray and repeated frost incidents caused micro- and macro-cracks. Fourier transform infrared spectroscopy (FTIR) demonstrated delignification of wood particles at the weathered WPC surface. Despite of increased surface area, accessibility for fungal hyphae and moisture content, weathering enhanced mass loss due to fungal decay only subtly but not significantly. These potentially enhancing effects for fungal decay are assumed to be outbalanced by delignification due to photo-oxidation and leaching of degradation products resulting in loss of nutrient sources essential for fungal growth.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::666ba7dc894496411cb2ab66d65df596 https://doi.org/10.1016/j.ibiod.2012.08.004 Zobrazit plný text záznamu Full Text from ScienceDirect