Bio-nanocomposite films reinforced with cellulose nanocrystals: Rheology of film-forming solutions, transparency, water vapor barrier and tensile properties of films
作者： Nassima El Miri , Karima Abdelouahdi , Abdellatif Barakat , Mohamed Zahouily , Aziz Fihri
DOI: 10.1016/J.CARBPOL.2015.04.051
关键词:
摘要: This study was aimed to develop bio-nanocomposite films of carboxymethyl cellulose (CMC)/starch (ST) polysaccharide matrix reinforced with nanocrystals (CNC) using the solution casting method. The CNC were extracted at nanometric scale from sugarcane bagasse via sulfuric acid hydrolysis and used as reinforcing phase produce CMC/ST-CNC different loading levels (0.5–5.0 wt%). Steady shear viscosity dynamic viscoelastic measurements film-forming (FFS) neat CMC, CMC/ST blend bio-nanocomposites evaluated. Viscosity revealed that a transition Newtonian behavior thinning occurred when added. tests confirmed all FFS have an entanglement network structure, induced by hydrogen bonding. In regard cast film quality, rheological data showed suitable for ambient temperature. effect addition on optical transparency, water vapor permeability (WVP) tensile properties studied. It found remain transparent due dispersion nanoscale. WVP significantly reduced elastic modulus strength increased gradually CNC. Herein, steps form new eco-friendly described taking advantage combination ST as-produced exhibited good enhanced properties, which are main required packaging applications.
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