BRANT, ANTONIO J.C.NAIME, NATALIALUGAO, ADEMAR B.PONCE, PATRICIA2020-10-192020-10-192020BRANT, ANTONIO J.C.; NAIME, NATALIA; LUGAO, ADEMAR B.; PONCE, PATRICIA. Cellulose nanoparticles extracted from sugarcane bagasse and their use in biodegradable recipients for improving physical properties and water barrier of the latter. <b>Materials Sciences and Applications</b>, v. 11, n. 1, p. 81-133, 2020. DOI: <a href="https://dx.doi.org/10.4236/msa.2020.111007">10.4236/msa.2020.111007</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31454.2153-117Xhttp://repositorio.ipen.br/handle/123456789/31454The 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.81-133openAccesssugar canebagassecellulosebiomassacid hydrolysisnanoparticlesdelignificationbiodegradationpackagingsuspensionsfilmsArtigo de periódico11110.4236/msa.2020.1110070000-0002-1737-3191https://orcid.org/0000-0002-1737-3191Sem PercentilSem Percentil CiteScore