Rapid nanopaper production by spray deposition of concentrated microfibrillated cellulose slurries

Autor:	Davide Beneventi, Didier Chaussy, Elisa Zeno
Rok vydání:	2015
Předmět:	chemistry.chemical_compound Materials science chemistry Air permeability specific surface Ultimate tensile strength Stress–strain curve Slurry Nucleation Cellulose Composite material Thin film Agronomy and Crop Science Dewatering
Zdroj:	Industrial Crops and Products. 72:200-205
ISSN:	0926-6690
DOI:	10.1016/j.indcrop.2014.11.023
Popis:	This study presents a rapid method for nanopaper production by spray deposition of high concentration microfibrillated cellulose (MFC) slurries on a nylon fabric and their subsequent filtration dewatering. The filtration time for the consolidation of a wet MFC mat was of 15 and 90 s for sheets with basis weight of 13.7 and 124 g m−2, respectively. MFC films exhibited excellent Young's modulus of ca. 18 GPa and intrinsic air permeability of ca. 0.22 nm2. Nevertheless, the progressive decrease of the basis weight from 124 to 13.7 g m−2 induced the decay of the film tensile properties (stress and strain at break dropped from 150 MPa and 4.6% to 50 MPa and 0.4%) and the onset of a brittle behaviour. This trend was ascribed to the presence of residual fibre debris in the MFC slurry which acted as fracture nucleation spots in thin films.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cf402f3698c756883bd6db18983b02f4 https://doi.org/10.1016/j.indcrop.2014.11.023 Zobrazit plný text záznamu Full Text from ScienceDirect