Optimized Monitoring of Production of Cellulose Nanowhiskers fromOpuntia ficus-indica(Nopal Cactus)

Horacio Vieyra, Ulises Figueroa-López, Andrea Guevara-Morales, Berenice Vergara-Porras, Eduardo San Martín-Martínez, Miguel Ángel Aguilar-Mendez
2015 International Journal of Polymer Science  
Preparation of cellulose nanowhiskers (CNWs) has grown significantly because they are useful for a wide range of applications. Additional advantage in their design requires that they meet the following characteristics: nontoxicity, abundance, sustainability, renewability, and low cost. To address these requirements, nanowhiskers were prepared fromOpuntia ficus-indica(nopal) cellulose by acid hydrolysis. Monitoring the process of CNWs preparation is necessary to ensure maximum yield and purity
more » ... the end product. In this study, the cellulose preparation was monitored by analyzing microscopic morphology by SEM; the purity degree was determined by fluorescence microscopy as a novel and rapid technique, and FTIR spectroscopy was used for confirmation. The additional parameters that monitored the process were the crystallinity index by X-ray diffraction and the size of the particle by dynamic light scattering (DLS). Nopal cellulose was found to be comparable to commercial microcrystalline cellulose. The use ofOpuntia ficus-indicais a viable alternative for the production of highly pure CNWs and the strategy to supervise the preparation process was rapid.
doi:10.1155/2015/871345 fatcat:p3xlfdtsc5dgvh264dydsjx4ce