Obtenção de nanopartículas de celulose por hidrólise ácida provenientes de fibras longas de bambu

Abstract

The bamboo fibers are rich in cellulose, hemicellulose and lignin. Owing to their great mechanical properties, as requested, it was noticed an abundance of celulose and its respective orientantion at regions of internodes, which indicate a high rate of celulose content. Therefore, our work have a goal to extracting nanocellulose from that bamboo region, developing an efficient methodology in its production. The nanoparticles were obtained by acid hydrolysis at 64% after washing with NaOH and bleaching withH2O2and NaOH. The characterizations of the samples were made with TG, DTG, IFTR and particle size by Zeta Potential. Two events were observed in DTG analysis: one at54 °C, what corresponds water loss and on 330 ° C corresponding to cellulose degradation. Zeta Potential particle sizes obtained peaks at 257.1 nm (79.6%) and 67.9 nm (15.6%).