Studies on flexible bionanocomposite films composed of carboxymethyl cellulose and nanocellulose for packaging

International Conference and Exhibition on Materials Chemistry

March 31-April 01, 2016 Valencia, Spain

Debabrata Chakrabarty

University of Calcutta, India

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Moderately flexible nanocellulose/carboxymethyl cellulose (CMC) bionanocomposite films were prepared from CMC solution (30 wt.%) containing nanocellulose (NC) (70 wt.%) which was in the form of dispersion by using solvent casting method. Samples of composites where CMC was crosslinked were also investigated. The mechanical properties, thermal stability & barrier properties of the nanocomposite films were studied by tensile testing, TGA, DSC & MVTR characteristics. The crystallinity & morphologies of composites were analyzed with XRD & scanning electron microscopy (SEM). The addition of CMC (minimum quantity of 30 wt.%) to the NC films increased tensile strength and reduced elongation at break of the composite films. The CMC crosslinked with GTMA produced composite films with improved thermal stability as was revealed from DSC & TGA thermograms of linear and crosslinked CMC/NC blends at an identical concentration of NC. The barrier properties of such transparent composite films were improved in terms of MVTR values with respect to CMC in the presence of NC.

Biography :

Email: chakrabarty_deb@yahoo.com