Extraction and Characterization of a New Lignocellulosic Fiber from Yucca Treculeana L. Leaf as Potential Reinforcement for Industrial Biocomposites

The need to preserve nature has led researchers to explore new natural fibers for biodegradable biocomposites. Present work explored first time the thermo-physico-chemical, morphological, and mechanical properties of Yucca treculeana (YT) fiber with a density of 1.330 ± 0.039 g/cm³. The estimated chemical analysis of YT fiber is 82.3%, 12.1%, and 5.6% for cellulose, hemicellulose, and lignin, respectively. The surface chemistry, crystallinity, and functional groups of YT fibers were analyzed by XPS, XRD, and FTIR, respectively. The concentration levels of carbon (62.88%) and oxygen (33.72%) were detected by XPS. XRD analysis showed that the YT fiber has a crystallite size of 3.02 nm and a crystallinity index of 48.85%. Based on the thermal analysis by TGA, the results show thermal stability of the YT fiber up to 360.6°C. The average mechanical properties of the fiber are 222 MPa for the tensile strength, 2.47% for the strain at break and the Young’s modulus is equal to 16.85 GPa. In addition, the results obtained in this study were compared with those found in the related literature. All these results prove that YT fiber can be used as reinforcement in making lightweight industrial biocomposites with thermoplastic or thermosetting polymers.