Compatibility and mechanical properties of maleicanhydride modified the wood plastic composite

Abstract

Wood plastic composite, known as green composite, combines natural vegetable fibers and plastic and thus acquires the properties of both. In this study, coir was subject to alkali treatment to eliminate pectin, hemicelluloses, fat and impurities. Alkali treatment reduces the weight of coir and the greater the concentration and longer the alkali treatment time, the greater is the loss of coir fibers. This study uses coir fibers and polypropylene to make wood plastic composite. Alkali treatment can increase the mechanical property of the resulting wood plastic composite. In particular, the optimum parameters of the treatment are 17.5 wt% for 1 h. As is demonstrated by scanning electron microscope images, methylmaleic anhydride-graft-polypropylene improves the interface binding force between the coir and polypropylene.

A Review on Flexural Properties of Wood-Plastic Composites

“…Therefore, the main principle of improving the mechanical properties of lignocellulosic materials is to enhance the interface bonding force between materials and substrates. The main methods to enhance the interfacial bonding strength are surface pretreatment of substrate and raw material, including physical and chemical methods [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ], as well as adding modifiers, including compatibilizers, coupling agents, etc. Other methods include adding nanoscale inorganic minerals for composite modification.…”

Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer

“…Good interfacial adhesion between the matrix and the fibers is important to transfer stress from the matrix to the fibers and thus, produce composites with enhanced properties . Moreover, treatments that promote disruption of hydrogen bonding in natural fillers and remove lignin, wax and oils that cover their external surface cell wall can also contribute to improve mechanical properties of WPC . Besides the abovementioned factors, properties of WPC are also dependent on fiber length, morphology and mechanical interlocking .…”

Effects of wool fibres, ammonium polyphosphate and polymer viscosity on the flammability and mechanical performance of PP/wool composites

“…The reinforcing effects of lignocellulosic fibres can be increased by uniform fibre distribution and improved polymer-fibre compatibility [2,3]. However, poor fire resistance of the lignocelluloses has limited the usage of these composites in many sectors, such as aerospace and building industries, requiring stringent flammability regulations [4].…”