Abstract
This study was constructed to examine the viscoelastic properties and the microstructure of wood-plastic composites (WPCs) before and after being subjected to UV irradiation. The pellet of the wood polymer composites consists of polypropylene as the matrix and rice-husk flour as the reinforcing filler. The samples were UV irradiated from 5000 hours to 20,000 hours with the increment of 5000 hours to study the effect of weathering on the viscoelastic properties of the WPCs. The microstructures of the surface of the samples were examined using Optical Microscopy (OM). The mechanical properties of WPCs through dynamic mechanical analysis test were assessed for both polyvinyl chloride (PVC) and polypropylene (PP) samples. The value of storage modulus (E’) decreases when been exposed in the ultra violet irradiation, in both glassy and rubbery states. Moreover, the density of the WPC samples is closed to light weight and result is comparable. As for morphological properties test, the surface of cracked, voids appeared at the surface of the WPC samples of both PVC and PP interface and the density of composite decreased.
Highlights
A continuously growing demand for resources makes a sustainable and efficient resource utilization is more important than ever
Wood polymer composite (WPCs) experience undesirable shading change, chalking, shrinkage and swelling, and in like manner there is need to upgrade the components in charge of the weathering of WPC and create strategies for enhancing their weathering resistance The Dynamic Mechanical Analysis (DMA) is used to determine the response of elastic, which is important to shape recovery and response of viscous which is essential for dispersing mechanical energy and preventing breakage to polymer
The objectives of this research was achieved with the samples of wood polymer composites have been successfully prepared with specific size for the density test, morphological surface analysis and dynamic mechanical analysis before and after ultra violet irradiation exposure
Summary
A continuously growing demand for resources makes a sustainable and efficient resource utilization is more important than ever. Wood polymer composite (WPC) utilization is currently growing rapidly in the construction business where it been used as an outside item of Industrial Building System (IBS) In such applications, WPCs experience undesirable shading change, chalking, shrinkage and swelling, and in like manner there is need to upgrade the components in charge of the weathering of WPC and create strategies for enhancing their weathering resistance The Dynamic Mechanical Analysis (DMA) is used to determine the response of elastic, which is important to shape recovery and response of viscous which is essential for dispersing mechanical energy and preventing breakage to polymer.
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