| Texto completo | |
| Autor(es): |
de Sa Barros, Silma
;
Las-Casas, Bruno
;
Pereira, Barbara
;
de Freitas, Flavio A.
;
Saron, Clodoaldo
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Polymer International; v. N/A, p. 7-pg., 2025-06-09. |
| Resumo | |
Cellulose-based materials have been explored in several fields due to their abundance, performance, low cost and environmental benefits. The development of fiber-based products is highly attractive in countries with large agricultural areas and high production of agro-industrial waste. In Brazil, the waste from the palm oil industry stands out as a promising cellulosic source for biomaterials but remains underexplored. In the present study, various biomaterials such as palm bunch fiber, cellulose and cellulose nanofibrils (CNFs) were extracted from palm oil waste and characterized in terms of morphology, size distribution, crystalline structure, chemical composition and thermostability. Palm bunch fiber exhibited alpha-cellulose as the main component (41%), followed by hemicellulose (21%) and lignin (12%). Potassium (K) was the most abundant inorganic element found in nanofibrils. High-aspect-ratio CNFs were isolated using disc ultra-refining, with an average width of 21 nm and higher crystallinity compared to palm fiber and cellulose. Thermostability assays revealed that CNFs exhibited the highest residual weight at elevated temperatures (>500 degrees C), whereas palm bunch fiber and cellulose showed superior onset and maximum degradation temperatures. Overall, the distinct characteristics of these cellulose-based materials produced from palm oil waste highlight the potential of this agro-industrial waste as a valuable lignocellulosic source to develop sustainable materials for a wide range of applications. (c) 2025 Society of Chemical Industry. (AU) | |
| Processo FAPESP: | 20/14318-6 - Reciclagem de materiais poliméricos multicomponentes por modificação estrutural em processamento termomecânico reativo catalisado sob condições de alto cisalhamento |
| Beneficiário: | Clodoaldo Saron |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 21/04324-1 - Aplicação de tratamentos enzimáticos e nanopartículas de lignina no desenvolvimento de nanocelulose customizada para fabricação de embalagem ativa e sustentável |
| Beneficiário: | Bruno Las Casas Chaves |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |