Biological Durability of Injection Moulded Wood Plastic Composite Boards

H’ng, Paik San; Lee, A. N.; Hang, Chit Meng; Lee, S. H.; Khalina, A.; Paridah, M. T.

doi:10.3923/jas.2011.384.388

Cited by 20 publications

(5 citation statements)

References 6 publications

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“…The result shows that polymer composite has resistance to decay despite good fungal colonization on the composite surfaces. Similar results were reported by other authors …”

Section: Resultssupporting

confidence: 93%

Surface characterization of weathered and heat‐treated wood‐based composites reinforced by styrene maleic anhydride

Zor

Can

Gardner

2019

Color Research & Application

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The aim of this study was to investigate the effect of heat‐treated lignocellulosic filler on the surface characteristics and decay resistance of the wood flour/styrene maleic anhydride (SMA) composites. In this study, heat treatment was conducted at 212°C for 8 hours. Test specimens were prepared by injection molding at 220°C. Weathering tests were performed by cycles of UV‐light irradiation for 8 hours, water spray for 15 minutes, and then conditioning for 3.45 hours in an accelerated weathering test cycle chamber. Heat‐treated wood flour/SMA composites were evaluated for color changes, and attenuated total reflectance Fourier transform infrared (FTIR) spectroscopy was used to analyze chemical changes on the sample surfaces. The wood decay tests were performed of white rot fungus, Trametes versicolor (L.: Fr.) Pilat was based on mini‐block specimens on 48% malt extract agar in petri dishes. The study showed that color changes occurred when heat‐treated filler rate is increased in this material. Therefore, materials in 10% filler rate show lower color changes than other variation. As a result of the FTIR analysis, the addition of wood filler into the SMA causes changes in the chemical structure. In addition, the increase in wood filler reduced the resistance to weathering. Decay results showed that thermally modified wood has lower mass loss caused by fungal attack than untreated wood material. The weight loss decreases with the increase in wood flour rate expect 10%T and 10%UT in all composites.

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“…The result shows that polymer composite has resistance to decay despite good fungal colonization on the composite surfaces. Similar results were reported by other authors …”

Section: Resultssupporting

confidence: 93%

Surface characterization of weathered and heat‐treated wood‐based composites reinforced by styrene maleic anhydride

Zor

Can

Gardner

2019

Color Research & Application

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“…Similarly, Hosseinihashemi et al [53] observed that white-and brown-rot fungi caused weight loss of ~6% after 16 weeks in a composite based on sugarcane bagasse and PP. According to H'ng et al [63], P. sanguineus caused weight loss of ~3% in a composite made with wood and PP. Therefore, the fungus species used in this study has promising characteristics that can be highly improved by causing abiotic deterioration under the composite.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Deterioration of Wood Plastics Composites by the White-Rot Fungus Pycnoporus sanguineus

et al. 2019

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Wood plastic composites (WPC) are characterized by the mixing of wood fibers with plastics, allowing the production of new products whose characteristics are in several aspects superior to those of the original products and represent an expanding class of durable and low-cost materials in which their uses can reduce the environmental footprint and the dependence on petroleum products. Nevertheless, WPC has some setbacks, including biodegradation, which shortens its life span. In this study, the wood composite was exposed to the white-rot fungus Pycnoporus sanguineus in order to evaluate its resistance to biodegradation. The WPC was prepared with a 1:1 ratio of Eucalyptus spp. bark as reinforcement agent and polypropylene as matrix. Mechanical and rheological properties and mass loss were evaluated from 15 to 120 days of fungus exposure. After 15 days, a mass loss was detected, which transmitted a negligible effect on the impact resistance of the composite. For the 120-day fungus-exposed composite, the fungus produced a biofilm under the WPC that create a special environment for lignocellulosic consuming led to deterioration of the mechanical properties and minor changes on the thermal–chemical stability of the WPC. Finally, the study gave a great indication of the susceptibility of a Eucalyptus-based composite to biodegradation.

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“…For that reason, the maximal water absorption degree should be about 1 wt%. [36] The water absorption degree for the studied samples is listed in Table 6. The lowest water absorption degree is observed for the sample WPC1 (1.81%), which does not contain inorganic additives.…”

Section: Water Absorption Degreementioning

confidence: 99%

Study of Fire Retardancy and Thermal and Mechanical Properties of HDPE-Wood Composites

Krehula

Katančić

Marić

et al. 2015

Journal of Wood Chemistry and Technology

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Journal of Wood Chemistry and Technology Publication details, including instructions for authors and subscription information:This article reports a study of flame retardancy and thermal and mechanical properties of wood-plastic composites (WPCs) based on high-density polyethylene and pine flour. The study shows that sample composition plays an important role in WPCs' properties. The influence of additives like fillers (SiO 2 or CaCO 3 ) and flame retardants ammonium polyphosphate (APP) and pentaerythritol (PER) on WPCs' properties has been considered. The best properties are shown in samples using SiO 2 as filler and treated with the intumescent fire retardant APP/PER. Such samples have excellent fire retardancy with V-0 rating (UL-94 test) and imply that APP/PER fire retardant ensures effective fire retardancy for WPCs.

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Biological Durability of Injection Moulded Wood Plastic Composite Boards

Cited by 20 publications

References 6 publications

Surface characterization of weathered and heat‐treated wood‐based composites reinforced by styrene maleic anhydride

Surface characterization of weathered and heat‐treated wood‐based composites reinforced by styrene maleic anhydride

Deterioration of Wood Plastics Composites by the White-Rot Fungus Pycnoporus sanguineus

Study of Fire Retardancy and Thermal and Mechanical Properties of HDPE-Wood Composites

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