2026-08-16T05:38:31Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/940332025-03-18T14:28:17Zcom_20.500.14352_14col_20.500.14352_15

Chitosan-reinforced cellulosic bionogels: Viscoelastic and antibacterial properties Villar-Chavero, Maria del Mar Domínguez Toribio, Juan Carlos Alonso Rubio, María Virginia Oliet Pala, María Mercedes Rodríguez Somolinos, Francisco New chitosan-reinforced cellulosic bionogels were successfully formulated with different chitosan loadings (0.25, 0.5, 0.75, and 1 wt/wt. %). These materials were developed using cholinium lysinate, a bio-ionic liquid, being an ecological alternative to conventional ionogels. The rheological properties of these materials showed. that all the studied viscoelastic properties were higher (elastic moduli, G'; loss moduli, G”; and complex viscosity, η*) as the chitosan loading increased. The reinforced bionogels were physical weak gels, and the proposed mechanism of formation was by hydrogen bonds. The bionogel with 1 wt/wt. % chitosan loading exhibited the highest viscoelastic properties (for 4 Hz, G': 552 kPa, G”: 99 kPa, and η*: 22 kPa·s). Regarding the antibacterial properties, these gels showed a good inhibitory capacity to S. aureus and E. coli, especially against the latter bacterium. For these reasons, these novel ecofriendly gels are promising in the pharmaceutical/medical and biosensors sectors to develop new functional materials. 2024-01-19T11:57:46Z 2024-01-19T11:57:46Z 2024-01-19T11:57:46Z 2020 journal article https://hdl.handle.net/20.500.14352/94033 0144-8617 10.1016/j.carbpol.2019.115569 eng Villar-Chavero, M. Mar, et al. «Chitosan-Reinforced Cellulosic Bionogels: Viscoelastic and Antibacterial Properties». Carbohydrate Polymers, vol. 229, febrero de 2020, p. 115569. https://doi.org/10.1016/j.carbpol.2019.115569. restricted access