Material resistance of weathered wood-plastic composites against fungal decay

被引：29
作者：
Naumann, Annette [1 ]
Stephan, Ina [1 ]
Noll, Matthias [1 ,2 ]
机构：
[1] BAM, Fed Inst Mat Res & Testing, Div 4 1, D-12205 Berlin, Germany
[2] Univ Appl Sci Coburg, D-96406 Coburg, Germany
来源：
INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 2012年 / 75卷
关键词：
Wood-plastic composite (WPC); Weathering; Fungal decay; Fourier transform infrared - attenuated total reflexion (FTIR-AIR) spectroscopy; Microscopy; DENSITY-POLYETHYLENE COMPOSITES; FTIR SPECTROSCOPY; CONTACT;
D O I：
10.1016/j.ibiod.2012.08.004
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
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. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：28 / 35
页数：8
相关论文
共 30 条
  • [1] Accelerated Ultraviolet Weathering of Recycled Polypropylene-Sawdust Composites
    Adhikary, Kamal Babu
    Pang, Shusheng
    Staiger, Mark P.
    [J]. JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, 2009, 22 (06) : 661 - 679
  • [2] Effects of increased solar ultraviolet radiation on materials
    Andrady, AL
    Hamid, SH
    Hu, X
    Torikai, A
    [J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 1998, 46 (1-3) : 96 - 103
  • [3] [Anonymous], 2002, Handbook of vibrational spectroscopy
  • [4] Carll CG, 1999, J TEST EVAL, V27, P150
  • [5] Clemons CM, 2004, FOREST PROD J, V54, P50
  • [6] Moisture dynamics of WPC and the impact on fungal testing
    Defoirdt, Nele
    Gardin, Soetkin
    Van den Bulcke, Jan
    Van Acker, Joris
    [J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 2010, 64 (01) : 65 - 72
  • [7] DIN, 1978, DIN 52186.
  • [8] DIN, 2004, 113A1200404 DIN
  • [9] FT-IR imaging microscopy to localise and characterise simultaneous and selective white-rot decay within spruce wood cells
    Fackler, Karin
    Stevanic, Jasna S.
    Ters, Thomas
    Hinterstoisser, Barbara
    Schwanninger, Manfred
    Salmen, Lennart
    [J]. HOLZFORSCHUNG, 2011, 65 (03) : 411 - 420
  • [10] Localisation and characterisation of incipient brown-rot decay within spruce wood cell walls using FT-IR imaging microscopy
    Fackler, Karin
    Stevanic, Jasna S.
    Ters, Thomas
    Hinterstoisser, Barbara
    Schwanninger, Manfred
    Salmen, Lennart
    [J]. ENZYME AND MICROBIAL TECHNOLOGY, 2010, 47 (06) : 257 - 267
123