Effect of Immersion Temperature on Long-term Water Uptake Behavior of HDPE/Wood sawdust Composite

Document Type : Research Paper

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Abstract

Effect of immersion temperature on long-term water uptake behavior of HDPE/wood sawdust Composite was studied in this research. Panels of wood plastic composites (WPCs) were manufactured from a mixture of sawdust of wood and High density polyethylene powder at 60% by weight filler loading at constant temperature and pressure using a dry blend/hot press method. The nominal density and dimensions of the panels were 1g/cm3 and 35×35×1 cm3, respectively. Specimens were cut from the panels based on DIN-EN 317 standard. The prepared specimens were immersed in distilled water‍ at 20, 40 and 60ºC to measure long-term water absorption. The results showed that water absorption in HDPE/wood sawdust composite proved to follow the kinetics of a Fickian diffusion process. By increasing the immersion temperature, the time to reach to maximum value of water absorption decreased and maximum value of water absorption increased. Diffusion coefficients were affected parabolically by immersion temperature.

References

 
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Iranian Journal of Wood and Paper Industries
Volume 1, Issue 1 - Serial Number 1
January 2011
Pages 36-44

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