Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

Abstract

Greater concern for environmental safety and fuel economy has increased interest in the use of renewable resources for development of new materials. Wood-plastic composites, made of recycled plastic and wood wastes, are very attractive in this respect, making this one of the most dynamic areas of new developments in the plastics industry in the past decade. This paper presents the preparation and characterization of polypropylene-sawdust composites by compression molding using maleated polypropylene (MAPP) produced in Brazil by reactive extrusion, with different amounts of two types of peroxides. The MAPP was characterized for thermal properties, melt flow index, and chemical structure, while the composites containing both uncoated and MAPP-coated sawdust were characterized for mechanical properties to understand the effect of coating as well as to compare these properties with those of composites prepared with commercial MAPP. The MAPP was efficient as a compatabilizer for polypropylene/sawdust composites. Better impact and tensile properties were observed in composites prepared with medium and high melt flow index compatibilizer concentrations, respectively.

Mechanical, morphological, flamability and thermal properties of artificial wood plastic

“…Sawdust decreases the composites weight, the other important benefit is money saving from commodity point of view. On the other hand, sawdust burning may lead to catastrophic environment and thus represent a serious environmental issue (Santos et al , 2015; George et al , 2001; Najafi et al , 2006).…”

Quantifying effects of compositional variations on microstructural properties of polypropylene-wood fiber composites by melt rheology and tensile test data

“…Using of several additives and various formulation and/or processing attempts have been extensively studied so far to increase interfacial adhesion between components of WPCs. 3–15 Maleic anhydride grafted polyolefins (PE-g-MA, PP-g-MA, etc.) appear to be the most effective compatibilizers or coupling agents for WPCs.…”

Aluminum and copper deposition through the process of thermal flame spray on polypropylene-pine wood fiber composite filaments and their applications

“…This material was dried at 60 � C for 22 h. Composites containing 5, 10 and 20 wt. % PWSDP were prepared according to preparation method described by Santos et al 22 The polypropylene (PP), of Braskem, H 503 brand having density value of 905kg.m, flexural strength of 1300 MPa, tensile strength of 35 MPa and % elongation of 11 23 was used in this study.…”