Per: Ana Carolina Accioly Monteiro (IME), Lucio Fabio Cassiano Nascimento (IME), Sergio Neves Monteiro (IME), Michelle Souza Oliveira (IME)
Abstract:
In this work, the use of Natural Lignocellulosic Fibers in polymeric composites for application in ballistic systems is discussed. These fibers, with the aid of techniques that improve their mechanical properties, such as reinforcement architectures and treatments that increase the adhesion to the fiber-matrix interface, are viable options for ballistic protections and have satisfactory results in this field of study. The characterization of natural sisal fiber was made from x-ray diffraction, allowing the calculation of parameters such as the microfibrillar angle and the crystallinity index, which are important values for the direction of the mechanical functioning of these fibers. For fiber and sisal tissue, the microfibrillar angle was 7.68º and 6.89º, respectively, and a crystallinity index of 40.44% for the tissue. We also analyzed the appearance of a peak not commonly found in the amorphous region of the sisal XRD, in the 12.5º region of the diffractogram.