Artículo
Wide range humidity sensors printed on biocomposite films of cellulose nanofibril and poly(ethylene glycol)
Syrový, Tomáš; Maronová, Stanislava; Kuberský, Petr; Ehman, Nanci Vanesa
; Vallejos, María Evangelina
; Pretl, Silvan; Felissia, Fernando Esteban; Area, Maria Cristina
; Chinga Carrasco, Gary
Fecha de publicación:
09/2019
Editorial:
John Wiley & Sons Inc
Revista:
Journal of Applied Polymer Science
ISSN:
0021-8995
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Cellulose nanofibril (CNF) films were prepared from side streams generated by the sugarcane industry, that is, bagasse. Two fractionation processes were utilized for comparison purposes: (1) soda and (2) hot water and soda pretreatments. 2,2,6,6-Tetramethylpiperidinyl-1-oxyl-mediated oxidation was applied to facilitate the nanofibrillation of the bagasse fibers. Poly(ethylene glycol) (PEG) was chosen as plasticizer to improve the ductility of CNF films. The neat CNF and biocomposite films (CNF and 40% PEG) were used for fabrication of self-standing humidity sensors. CNF-based humidity sensors exhibited high change of impedance, within four orders of magnitude, in response to relative humidity (RH) from 20 to 90%. The use of plasticizer had an impact on sensor kinetics. While the biocomposite film sensors showed slightly longer response time, the recovery time of these plasticized sensors was two times shorter in comparison to sensors without PEG. This study demonstrated that agroindustrial side streams can form the basis for high-end applications such as humidity sensors, with potential for, for example, packaging and wound dressing applications.
Palabras clave:
BIOCOMPOSITES
,
BIOMASS
,
FRACTIONATION
,
HUMIDITY SENSORS
,
NANOCELLULOSE
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Articulos(IMAM)
Articulos de INST.DE MATERIALES DE MISIONES
Articulos de INST.DE MATERIALES DE MISIONES
Citación
Syrový, Tomáš; Maronová, Stanislava; Kuberský, Petr; Ehman, Nanci Vanesa; Vallejos, María Evangelina; et al.; Wide range humidity sensors printed on biocomposite films of cellulose nanofibril and poly(ethylene glycol); John Wiley & Sons Inc; Journal of Applied Polymer Science; 136; 36; 9-2019; 1-10; 47920
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