Mechanical, thermal and barrier properties of nano-biocomposite based on gluten and carboxylated cellulose nanocrystals

摘要: Abstract Bio-based polymers and biocomposites are a relatively new growing market in light of recent societal concerns including dwindling petroleum reserves, environmental end-of-live disposal issues. Developing sustainable environmentally friendly alternatives to current packaging films, such as polyethylene is neither easy nor simple. We report here on our effort develop novel nanocomposite-based film comprised gluten filled with carboxylated cellulose nanocrystals (C.CNCs). observed the effect different C.CNC loadings mechanical, thermal, sorption barrier properties resulting composite films. The results differential scanning calorimetry (DSC) indicated that increasing amount from 0 10 wt.% showed minimum at 5 wt.% for glass transition temperature ( T g ). mechanical breaking elongation (ɛ b ) decreased by 26%, but tensile strength (TS) increased (60%) presence C.CNC, maximum 7.5 wt.%. reinforcing C.CNCs was also confirmed dynamic analysis (DMA) where, adding an increase storage modulus detected. As compared film without water vapor permeability (WVP) 7.74 × 10 −11 4.96 × 10  mol/m.s. Pa containing 7.5 wt.% C.CNC; nanocellulose content, uptake nanocomposites solubility decreased. These indicate promising agent polymers.