|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Determination of the Crystallinity Index and Morphological Aspect of Carnauba Fibers
||Raí Felipe Pereira Junio, Lúcio Fabio Cassiano Nascimento, Lucas de Mendonça Neuba, Andressa Teixeira Souza, Raphael Henrique Morais Reis, Sergio N. Monteiro
|On-Site Speaker (Planned)
||Sergio N. Monteiro
Natural Lignocellulosic fibers (NLFs) have several benefits when compared to synthetic fibers. The properties of natural fibers depend on several factors, especially crystallinity, microfibrillar angle (MFA), plant age, morphology, among other requirements. It is extremely important to collect information on indicators that can influence the properties of NLFs, especially the fibers of carnauba (Copernicia prunifera). This study aims to raise information about the crystallinity and morphology of these fibers, performing analysis related to an optical microscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used. The micrographs obtained by optical microscopy revealed a predominance of an elliptical cross section. XRD showed the diffraction pattern characteristic of the carnauba fibers, obtaining a crystallinity index of 86.9% and MFA of 7.48 °. SEM micrographs revealed surface porosity and on the transverse surface it was possible to identify the lumen and microficrofibrils. Carnauba fibers have characteristics similar to other FNLs already studied.