Study of the reprocessing effects on the behavior of the PVC/alfa composites compatibilized with PVC-g-MA

摘要

Composite materials provide design engineers with superior quality and long life span. Higher strength, lower weight and less maintenance have led to many engineering applications [1]. Further fore, one major advantage of natural fiber plastic composites is the capability to recycle the product either during the manufacturing process (internal recycling) or later at the end of the service life (external recycling) [2]. It is important to bear in mind that the utilization of resources sparingly to their utmost benefits is an important strategy for conservation of natural resources. One such route is to recycle wood polymer composites (WPC) waste. Recycling reduces the raw material cost, it can help WPC manufacturers to gain competitive advantage on cost of raw materials while also conserving environment [3]. Hence, recycling of WPC waste is deemed appropriate in terms of economy, utilization and management of natural resource and environment. The survey of literature shows that available studies on the recycle-ability of WPC composites are so rare and only a few papers published up-to-date. Effect of recycling on properties of rice husk-filled-polypropylene was studied which indicated slight decrease in tensile, flexural, impact properties, and water absorption [4]. Bourmaud and Baley [5] investigated the recycle ability of hemp and sisal fibers reinforced polypropylene composites. Their results showed that the mechanical properties are well conserved. Beg et al [6]. also investigated the effect of reprocessing of the wood fiber-PP composites in injection molding process and reported both decrease in tensile strength and Young's modulus because of the fiber damage.