Preliminary Results of Wood Plastics Composite: An Innovative Eco-friendly Product

Three types of prototypes of innovative and creative products have been made in Laboratory of Forest Products Technology, Faculty of Forestry, Universitas Sumatera Utara. According to the origin of raw material, the products are consisted of recycle paper, natural dye, and plastics waste. Production methods were as follows: recycle paper was produced using used paper with addition thermoplastic adhesive. Natural dyes derived from plants and they were applied mainly into fabrics using eco-print technique. Plastics waste originated from beverages bottles and packaging were mixed with wood and converted into eco-friendly souvenir. Results of this study: recycle paper can be used as book cover, campaign media, eco-print media and egg tray. Natural dyes in conjunction with eco-printing technique have been patterned not only on fabrics but also onto paper, wood, leather and ceramics become décor paper, stationary, women and seminar needs and mugs, respectively. Mixture of plastics waste and wood become eco-friendly souvenirs in various composition and shape. Limited and simply testing were carried out and discussed. Advance examination is still needed to assess the quality of the products. Determination of packaging, pricing and market sharing of these various innovative and creative products should be also studied further.

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Prototypes of innovative and creative products from laboratory of forest products technology

Nuryawan

Risnasari

Sadalia

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Properties of wood composite plastics made from predominant Low Density Polyethylene (LDPE) plastics and their degradability in nature

et al. 2020

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To address concerns over plastics in the global environment, this project produced three wood plastics composites (WPCs) which could divert plastics from the waste stream into new materials. The three materials made had a ratio of 85%:15%, 90%:10%, and 95%:5% low density polyethylene (LDPE) to wood powder and were produced using the dissolution method. Physical and mechanical properties of each WPC were evaluated according to Japanese Industrial Standard (JIS) A 5908:2003. Their degradation in nature was evaluated through a graveyard test and assay test conducted in Coptotermes curvignathus termites. Results showed that density, moisture content, thickness swelling and water absorption of the WPCs fulfilled the JIS standard. The mechanical properties of these composites also met the JIS standard, particularly their modulus of elasticity (MOE). Modulus of rupture (MOR) and internal bonding (IB) showed in lower values, depending on the proportion of wood filler they contained. Discoloration of the WPCs was observed after burial in the soil with spectra alteration of attenuated transmission reflectance (ATR) in the band of 500-1000 cm-1 which could be assigned to detach the interphase between wood and plastics. As termite bait, the WPCs decreased in weight, even though the mass loss was comparatively small. Micro Confocal Raman Imaging Spectrometer revealed that termite guts from insects feeding on WPCs contained small amounts of LDPE. This indicated termite can consume plastics in the form of WPCs. Thus WPCs made predominantly of plastics can be degraded in nature. While producing WPCs can assist in decreasing plastics litter in the environment, the eventual fate of the LDPE in termites is still unknown.

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Preliminary Results of Wood Plastics Composite: An Innovative Eco-friendly Product

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Prototypes of innovative and creative products from laboratory of forest products technology

Prototypes of innovative and creative products from laboratory of forest products technology

Properties of wood composite plastics made from predominant Low Density Polyethylene (LDPE) plastics and their degradability in nature

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