RT Journal Article
T1 PVA/(ligno)nanocellulose biocomposite films. Effect of residual lignin content on structural, mechanical, barrier and antioxidant properties
A1 Espinosa, Eduardo
A1 Bascón-Villegas, Isabel
A1 Rosal Raya, Antonio
A1 Pérez-Rodríguez, Fernando
A1 Chinga-Carrasco, Gary
A1 Rodríguez, Alejandro
K1 Nanocellulose
K1 Biocomposite films
K1 Lignin effect
AB Nanocelluloses with and without residual lignin were isolated from wheat straw. In addition, the effect of TEMPO-mediated oxidation on the production of lignin-containing nanocellulose was studied. The different nanocelluloses were used as reinforcing agent in Poly(vinyl alcohol) films. The morphology, crystallinity, surface microstructure, barrier properties, light transmittance, mechanical and antioxidant properties were evaluated. The translucency of films was reduced by the addition of nanocellulose, however, the ability to block UV-light increased from 10% for PVA to >50% using lignin-containing nanocellulose, and 30% for lignin-free samples. The mechanical properties increased considerably, however, for loads higher than 5% a negative trend was observed presumptively due to a clustering of nanocellulose components in PVA matrix. The barrier properties of the films were improved with the use of nanocellulose, especially at small amounts (1–3%). The antioxidant capacity of films was increased up to 10% using lignin-containing nanocellulose compared to 4.7% using PVA.
PB Elsevier
YR 2019
FD 2019
LK https://hdl.handle.net/10433/22111
UL https://hdl.handle.net/10433/22111
LA en
NO International Journal of Biological Macromolecules Volume 141, 1 December 2019, Pages 197-206
NO The authors are grateful to Spain's DGICyT, MICINN for funding this research within the framework of the Projects CTQ2016-78729-R and supported by the Spanish Ministry of Science and Education through the National Program FPU (Grant Number FPU14/02278), and also to the staff of the Central Service for Research Support (SCAI) at the University of Córdoba.CTQ2016-78729-RFECYT -- FPU14/02278
NO Universidad Pablo de Olavide. Departamento de Biología Molecular e Ingeniería Bioquímica
DS RIO
RD May 9, 2026