TITLE:
Cellulose Nanoparticles Extracted from Sugarcane Bagasse and Their Use in Biodegradable Recipients for Improving Physical Properties and Water Barrier of the Latter
AUTHORS:
Antônio Jedson Caldeira Brant, Natália Naime, Ademar Benévolo Lugão, Patrícia Ponce
KEYWORDS:
Sugarcane Bagasse, Cellulose from Alkaline Extraction, Acid Hydrolysis of Cellulose, Celullose Nanoparticles, Film-Forming Suspensions, Biodegradable Packaging
JOURNAL NAME:
Materials Sciences and Applications,
Vol.11 No.1,
January
19,
2020
ABSTRACT: The present work firstly aimed to obtain cellulose from sugarcane bagasse by using alkaline methods in pulping/delignifying and, at bleaching stages, using sodium chlorite, glacial acetic acid, and hydrogen peroxide, associated to NaOH/KOH. The process was carried out at temperatures varying from 55°C to 110°C, under magnetic stirring in various steps lasting from 2 h to 12 h. The yields of the two cellulose extracted, SCB24-Na-I and SCB24-Na-II, were 37% and 41%, respectively, from samples of ca. 15 g of the bagasse. Secondly, it is to extract nanoparticles from the obtained celluloses via acid hydrolysis (with 77% H2SO4) to lately be tested as reinforcement in biodegradable packagings. Both celluloses and their respective nanoparticles were characterized by several techniques, among them ATR-FTIR, DSC-TGA, XRD, SEM, and TEM. Despite that the yields of cellulose nanoparticles have been low, the
preliminary studies of their use in biodegradable films coated on biodegradable pots were promising.