The research on fiber-polymer composites has shown some problems in the application of these materials as compared to the conventional oil-based composites, such as the poor compatibility between fibers and polymers, poor mechanical properties due to the fibers as well as higher cost [17]. Moreover, the fiber-polymer composites have higher polarity and hydrophilicity which is inconsistent with the nonpolar and hydrophobic performance of conventional oil-based polymers. The poor compatibility of plant-based composites has resulted in poor properties of biomass-based fiber-polymers. For this, a lot of research on fiber-polymer composites was conducted in recent years to enhance the interface compatibility as well as to produce renewable lignocellulosic material based composites with better performance and lower cost as compared to the conventional oil-based composites.