INVESTIGADORES
AREA Maria Cristina
congresos y reuniones científicas
Título:
Bagasse ‐ a resource for fibres and nanocelluloses for biocomposites and 3D printing
Autor/es:
CHINGA-CARRASCO, G.; EHMAN, N.V.; VALLEJOS, M.E.; FELISSIA, F.E.; AREA, M.C.; JOHANSSON, J.; HÅKANSSON, J.
Lugar:
Chiba
Reunión:
Congreso; International Conference on Nanotechnology for Renewable Materials; 2019
Institución organizadora:
TAPPI's International Nanotechnology Division
Resumen:
Surgarcane bagasse, an abundant residue, is usually burned as an energy source. However, provided that appropriate and sustainable pulping and fractionation processes are applied, bagasse can be utilized as a main source of cellulose nanofibrils (CNF). We explored in this study the production of CNF inks for 3D printing by direct-ink-writing technology. The CNF were tested against L929 fibroblasts cell line and we confirmed that the CNF from soda bagasse fibers were found not to have a cytotoxic potential. Additionally, we demonstrated that the alginate and Ca2+ caused significant structural changes to the 3D printed constructs. The CNF-alginate grids exhibited a lateral expansion after printing and then shrank due to the cross-linking with the Ca2+. The release of Ca2+ from the CNF and CNF-alginate constructs was quantified thus providing more insight about the CNF as carrier for Ca2+, which combined with 3D printing offer potential for personalized wound dressing devices.