The development of biodegradable packaging based on starch has attracted an increasing amount of attention; however, materials produced from this biopolymer have some problems, including poor mechanical properties and hydrophilicity. Water solubility increases the degradability and the speed of degradation; however, moisture sensitivity also limits the applications of the material. The use of composites and nanocomposites from these materials can also aid in the development of new low-cost products with better performances (Yu, Dean, & Li, 2006).
Fiber-reinforced composites have been studied in various applications and reviewed by many authors because they have excellent specific properties, such as high strength, low weight and good barrier properties. In that respect, natural fibers are generally interesting because they not only have the functional capability to substitute for the widely used glass fibers but also have advantages from the point of view of weight and fiber–matrix adhesion, specifically with polar matrix materials, such as biopolymeric matrices. These agro-based materials are abundant in nature and frequently are wastes from various industrial processes. For example, sugarcane bagasse fiber, which is a poorly valorized waste residue from the sugar and alcohol industries in Brazil, is often used as fuels in households or is sometimes burned in the fields as a means of disposal. Sugarcane bagasse fiber consists of about 40–50% cellulose