Evaluation of accelerated decay of wood plastic composites by Xylophagus fungi

Lomelí-Ramírez, María Guadalupe; Ochoa-Ruiz, Héctor G.; Talavera, Francisco Javier Fuentes; García-Enriquez, Salvador; Cerpa-Gallegos, MA; Silva-Guzmán, José Antonio

doi:10.1016/j.ibiod.2009.08.002

Cited by 53 publications

(48 citation statements)

References 5 publications

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“…Wang and Morrell (2004) and Silva et al (2001) state that degradation by fungi is likely to be limited to the surfaces of wood plastic composites due to encapsulation of wood fibers, and the inner parts of the composites remain generally unaffected until adequate moisture content is reached. Lomelí-Ramírez et al (2009) also point out that fungal respiration results in metabolism of wood components and water formation during the decay process. Furthermore, hyphae are able to transport water from high humidity media into drier parts of specimens (Ammer 1964;Muller et al 2001).…”

Section: Biological Performancementioning

confidence: 94%

“…In general, the degree of fungal attack in test specimens is closely related to their moisture content during decay process, and mass losses are in general associated by increases in moisture content, since water is a key factor for colonization and decomposition of lignocellulosics by fungi (Guzman 2003;Lomelí-Ramírez et al 2009). Lomelí-Ramírez et al (2009) state that the proper moisture content to start decay by fungi is about 20%, and preferably this is 30%; however, Guzman (2003) recommends moisture levels higher than 30% for decay. Zabel and Morrell (1992) also state wood moisture content of 25 to 30% for fungal decay in wood specimens exposed to biological performance tests.…”

Section: Biological Performancementioning

confidence: 99%

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Degradation Behavior and Accelerated Weathering of Composite Boards Produced from Waste Tetra Pak® Packaging Materials

et al. 2014

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Manufacturing panels from Tetra Pak ® (TP) packaging material might be an alternative to conventional wood-based panels. This study evaluated some chemical and physical properties as well as biological, weathering, and fire performance of panels with and without zinc borate (ZnB) by using shredded TP packaging cartons. Such packaging material, a worldwide well-known multilayer beverage packaging system, is composed of cellulose, low-density polyethylene (LDPE), and aluminum (Al). Panels produced from waste TP packaging material were also examined by FT-IR to understand the fungal deterioration and extent of degradation after accelerated weathering. Before FT-IR investigations, panel specimens were ground under nitrogen atmosphere due to nonuniformity of the composite material. The FT-IR results showed that fungal degradation occurred in the natural polymer of the panel matrix. Although the natural polymer is mostly composed of cellulose, there were also small amounts of polyoses and lignin. It was seen that especially polyose and lignin bands in FT-IR spectra were affected more than cellulose bands by fungal attack. No changes were observed by the fungi in the plastic component (LDPE) of the matrix; however, LDPE seemed more sensitive to weathering than cellulose. Incorporation of ZnB at loading level of 1% (w/w) did not contribute fire performance of the panels when compared to control panel specimens, while a loading level of 10% improved fire performance considering test parameters such as mass loss, ignition time and peak heat release rate.

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Section: Biological Performancementioning

confidence: 94%

Section: Biological Performancementioning

confidence: 99%

Degradation Behavior and Accelerated Weathering of Composite Boards Produced from Waste Tetra Pak® Packaging Materials

et al. 2014

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“…Wood-plastic composites (WPCs) are materials that have remarkable properties, such as high strength and durability, low density, and high elastic moduli (Sanjuan and Jasso 2009). Other characteristics that support their application are their low cost as a result of the vast availability of natural fibers (Lightsey 1983;Zadorecki and Michell 1989), an excellent dimensional integrity under humidity exposure (Maldas and Kokta 1991;Flores et al 2014), and a significant resistance against fungus and termites (Mankowski and Morrel 2000;Verhey et al 2001;Lomelí et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Studies on Mechanical Performance of Wood-Plastic Composites: Polystyrene-Eucalyptus globulus Labill

et al. 2017

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The effects of size and concentration of wood particles on the properties of composites, obtained by extrusion, were evaluated based on polystyrene and wood particles from Eucalyptus globulus Labill. Woodplastic ratios were 10:90, 30:70, and 50:50 (weight / weight), and wood particles were retained in 40, 50, 65, and 100-mesh sieves. The density, flow index, water absorption, and the mechanical properties were evaluated. Scanning electron microscopy revealed poor adhesion between the wood particles and the polystyrene. The size and content of wood particles were found to have a strong influence on the mechanical properties of the composite. The introduction of the wood particles induced a reduction of the Young's modulus, ultimate strength and deflection, as well as an increment in the elongation at break. The impact resistance also increased with the size and concentration of the wood particles. Furthermore, with increasing content of wood particles, the value of the melt flow index decreased and the water absorption rose. .

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“…On the other hand, there are studies that suggest that the WPCs biodegradation process starts from biodecomposition of the plant filler particles, and it is dependent on plant species and on microbial activity [18,19]. Lomelí-Ramírez et al [20] indicated that WPCs which contained pine wood flour were less susceptible to the fungal attack than WPCs which had been filled with oak or maple flour. In turn, Xu et al [21] described the effects of volatile chemical components of various wood species on mould resistance of wood-plastic composites.…”

Section: Introductionmentioning

confidence: 99%

Resistance of Conifer Needle Polyolefin Composites (CNPCs) Against Biodecomposition Caused by Fungi

2017

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Evaluation of accelerated decay of wood plastic composites by Xylophagus fungi

Cited by 53 publications

References 5 publications

Degradation Behavior and Accelerated Weathering of Composite Boards Produced from Waste Tetra Pak® Packaging Materials

Degradation Behavior and Accelerated Weathering of Composite Boards Produced from Waste Tetra Pak® Packaging Materials

Studies on Mechanical Performance of Wood-Plastic Composites: Polystyrene-Eucalyptus globulus Labill

Resistance of Conifer Needle Polyolefin Composites (CNPCs) Against Biodecomposition Caused by Fungi

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