Effect of Nano-ZnO on Decay Resistance and Artificial Weathering of Wood Polymer Composite

A new material was prepared by formation of polystyrene in situ wood porous structure from styrene monomer through thermal-catalyst treatment. And the performance of such wood-polymer composite, containing mechanical properties and durability, was also tested. The SEM results showed that polymer was generated inside wood, and filled in wood cellular structure. The mechanical properties of such wood-polystyrene composite including modulus of rupture (MOR), modulus of elasticity (MOE), compression strength and hardness, were respectively improved 38%, 77%, 21% and 97% over untreated wood. And the durability of the novel composite involving dimensional stability, decay resistance and stability against weather erosion were remarkably improved than those of untreated wood. Such composite can be widely used in fields of construction, traffic and interior decoration, which greatly enhanced the utilization of low-valued wood material instead of high-quality wood.

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Durability of Wood-Polymer Composite Prepared by In Situ Polymerization of Functional Monomers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.571.69 ◽

2012 ◽

Vol 571 ◽

pp. 69-72

Author(s):

Ding Wang Gong ◽

Zhen Bo Liu ◽

Hua Wei Huang ◽

Chang Qing Zhang ◽

Chen Liang

Keyword(s):

Weight Loss ◽

Polymer Composite ◽

Cell Walls ◽

Decay Resistance ◽

White Rot ◽

Functional Monomers ◽

Cell Lumen ◽

Wood Polymer ◽

Wood Polymer Composite

Fast-growing plant wood, Micheliamacclurel wood, was modified by formation of wood-polymer composite to improve its decay resistance. Two functional monomers, glycidyl methacrylate and ethylene glycol dimethacrylate, added with a few Azo-bis-isobutryonitrile as initiator, and maleic anhydride as catalyst, were first impregnated into wood cell lumen under a vacuum-pressure condition, and then in-situ polymerized into copolymers through a catalyst-thermal treatment. The decay resistances of untreated wood and wood-polymer composites were assessed by weight loss and compared by SEM observations. SEM and FTIR analysis indicated that the in-situ polymerized copolymers fully filled up wood cell lumen and also grafted onto wood cell walls, resulting in the blockage of passages for microorganisms and moisture to wood cell walls. Thus, the decay resistance of the wood-polymer composite against brown rot fungus and white rot fungus in terms of weight loss achieved 1.04%~1.33%, improved 95.10%~95.35% than those of untreated Micheliamacclurel wood; and also higher than that of boron-treated wood. The SEM observations presented the remarkable improvement of decay resistance of wood after such treatment, which effectively protected wood from degradation by fungi.

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Environmental impacts of wooden, plastic, and wood-polymer composite pallet: a life cycle assessment approach

The International Journal of Life Cycle Assessment ◽

10.1007/s11367-021-01953-7 ◽

2021 ◽

Author(s):

Md.Musharof Hussain Khan ◽

Ivan Deviatkin ◽

Jouni Havukainen ◽

Mika Horttanainen

Keyword(s):

Sensitivity Analysis ◽

Global Warming ◽

Life Cycle Assessment ◽

Life Cycle ◽

Polymer Composite ◽

Global Warming Potential ◽

Consequential Life Cycle Assessment ◽

Wood Polymer ◽

Biogenic Carbon ◽

Wood Polymer Composite

Abstract Purpose Waste recycling is one of the essential tools for the European Union’s transition towards a circular economy. One of the possibilities for recycling wood and plastic waste is to utilise it to produce composite product. This study analyses the environmental impacts of producing composite pallets made of wood and plastic waste from construction and demolition activities in Finland. It also compares these impacts with conventional wooden and plastic pallets made of virgin materials. Methods Two different life cycle assessment methods were used: attributional life cycle assessment and consequential life cycle assessment. In both of the life cycle assessment studies, 1000 trips were considered as the functional unit. Furthermore, end-of-life allocation formula such as 0:100 with a credit system had been used in this study. This study also used sensitivity analysis and normalisation calculation to determine the best performing pallet. Result and discussion In the attributional cradle-to-grave life cycle assessment, wood-polymer composite pallets had the lowest environmental impact in abiotic depletion potential (fossil), acidification potential, eutrophication potential, global warming potential (including biogenic carbon), global warming potential (including biogenic carbon) with indirect land-use change, and ozone depletion potential. In contrast, wooden pallets showed the lowest impact on global warming potential (excluding biogenic carbon). In the consequential life cycle assessment, wood-polymer composite pallets showed the best environmental impact in all impact categories. In both attributional and consequential life cycle assessments, plastic pallet had the maximum impact. The sensitivity analysis and normalisation calculation showed that wood-polymer composite pallets can be a better choice over plastic and wooden pallet. Conclusions The overall results of the pallets depends on the methodological approach of the LCA. However, it can be concluded that the wood-polymer composite pallet can be a better choice over the plastic pallet and, in most cases, over the wooden pallet. This study will be of use to the pallet industry and relevant stakeholders.

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Mechanical Properties and Decay Resistance of Wood Polymer Composites (WPC)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.264-265.819 ◽

2011 ◽

Vol 264-265 ◽

pp. 819-824 ◽

Cited By ~ 1

Author(s):

Md. Rezaur Rahman ◽

Sinin Hamdan ◽

M. Saiful Islam ◽

Md. Shahjahan Mondol

Keyword(s):

Polymer Composites ◽

Young’S Modulus ◽

Modulus Of Elasticity ◽

Young's Modulus ◽

Decay Resistance ◽

Modulus Of Rupture ◽

Wood Polymer ◽

Static Young’S Modulus ◽

Wood Polymer Composites ◽

Wood Polymer Composite

In Malaysia, especially Borneo Island Sarawak has a large scale of tropical wood species. In this study, selected raw tropical wood species namely Artocarpus Elasticus, Artocarpus Rigidus, Xylopia Spp, Koompassia Malaccensis and Eugenia Spp were chemically treated with sodium meta periodate to convert them into wood polymer composites. Manufactured wood polymer composites were characterized using mechanical testing (modulus of elasticity (MOE), modulus of rupture (MOR), static Young’s modulus) and decay resistance test. Modulus of elasticity and modulus of rupture were calculated using three point bending test. Static Young’s modulus and decay resistance were calculated using compression parallel to gain test and natural laboratory decay test respectively. The manufactured wood polymer composites yielded higher modulus of elasticity, modulus of rupture and static Young’s modulus. Wood polymer composite had high resistant to decay exposure, while Eugenia Spp wood polymer composite had highly resistant compared to the other ones.

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Recycling Waste Wood of Construction

Materials Science Forum ◽

10.4028/www.scientific.net/msf.871.126 ◽

2016 ◽

Vol 871 ◽

pp. 126-131 ◽

Cited By ~ 2

Author(s):

Larisa Grigorieva ◽

Pavel Oleinik

Keyword(s):

Composite Materials ◽

Polymer Composite ◽

Wood Waste ◽

Raw Material ◽

Polymer Composite Materials ◽

Comparative Characteristic ◽

Complicated Shape ◽

Waste Wood ◽

Wood Polymer ◽

Wood Polymer Composite

The article considers contemporary methods and especially recycling of wood waste. The volume of wood waste is constantly growing due to the increase in the number of buildings subject to demolition or dismantling, reconstruction and repair works. The article contains the main requirements to the raw material derived from waste. Advantages of products made from wood-polymer composite materials on physic mechanical parameters. The comparative characteristic of cost for the production of wood-polymer plastic. It is noted that production made from wood polymer composite materials has unlimited product range, including boards, various profiled molded and moulded details with complicated shape (the board for the floor, skirting board, baguette, etc).

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Effects of the Temperature and UV Radiation on the Antimicrobial Action of Bactericidal Wood Polymer Composite (BWPC)

Macromolecular Symposia ◽

10.1002/masy.200900049 ◽

2011 ◽

Vol 299-300 (1) ◽

pp. 26-33

Author(s):

Jair Fiori Júnior ◽

Raquel Piletti ◽

Tatiana Barichello ◽

Mara G.N. Quadri ◽

Humberto G. Riella ◽

...

Keyword(s):

Polymer Composite ◽

Uv Radiation ◽

Antimicrobial Action ◽

Wood Polymer ◽

Wood Polymer Composite

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Wood-Polymer Composite Prepared by In Situ Synthesis of Copolymer within Wood and its Dimensional Stability

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.150-151.1 ◽

2010 ◽

Vol 150-151 ◽

pp. 1-5

Author(s):

Yong Feng Li ◽

Chi Jiang ◽

Duo Jun Lv ◽

Xiao Ying Dong ◽

Yi Xing Liu

Keyword(s):

Contact Angle ◽

Porous Structure ◽

Polymer Composite ◽

Dimensional Stability ◽

Value Added ◽

Hydroxyl Groups ◽

Wood Polymer ◽

Volume Swelling ◽

Wood Polymer Composite

In order to improve the value-added applications of low-quality wood, a novel Wood-Polymer Composite was fabricated by in-situ synthesis of copolymer from monomers within wood porous structure. The structure was characterized with SEM and FTIR, and its dimensional stability was also tested. The SEM observations showed that copolymer filled up wood pores and contact tightly with wood matrix, indicating strong interactions between them. FTIR analysis indicated that when the monomers copolymerized in situ wood porous structure, they also reacted with wood matrix by reaction of hydroxyl groups and ester groups, indicating chemical bond between the two phases, which is agreement with SEM observations. The volume swelling efficiency and contact angle of such composite were higher than those of wood, respectively, indicating good dimensional stability involving volume swelling efficiency and contact angle. Such composite could be potentially applied in fields of construction, traffic and indoor decoration.

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