Como Citar
Luna Vera, F., Melo Cortes, H. A., Murcia, C. V., & Charry Galvis, I. (2014). Superficial modification by silanization of cellulose microfibers obtained from sugarcane bagasse. Informador Técnico, 78(2), 106–114. https://doi.org/10.23850/22565035.93
Resumo
Microfibers exhibiting high water repellence were produced from sucarcane bagasse after conditioning and surface modification with hexadecyltrimethoxysilane. Three fiber conditioning treatments were studied: hypochlorite 3% (HP), a mixture of sodium chlorite and acetic acid (CAc) and an oxidant solution from hypochlorite and hydrogen peroxide followed by alkaline treatment (OX-B). Lignin and hemicellulose were effectively removed from bagasse fibers using OX-B treatment which also lead to unbundled fibers with lengths of 567 ± 115 μm and 32 as aspect ratio. HP treatment produced shorter and less abundant fibers which had lengths in the range of 296 ± 32 μm. The efficacy of OX-B method allowed the production of a lignocellulosic material from sucarcane bagasse, ease to modify, water proof, whose characteristics make it a potential good filler for reinforcement of polymer matrix composites.
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