Hydrophobic Graphene Oxide as a Promising Barrier of Water Vapor for Regenerated Cellulose Nanocomposite Films

摘要: Regenerated cellulose (RC) films exhibit poor water barrier performance, which seriously restricts its applications. To address this issue, an impermeable and hydrophobic graphene oxide modified by chemically grafting octadecylamine (GO-ODA) was utilized to enhance the vapor performance of RC nanocomposite films. Compared neat film, more than 20% decrease in coefficient permeability (PH2O) achieved loading only 2.0 wt % GO-ODA. The promising hydrophobicity GO-ODA effectively retarded formation hydrogen bonding at relatively weakened interface between GO RC, compensating for diffusion molecules interface; on other hand, fully exfoliated nanosheets were inclined align with surface as-prepared during hot-pressure drying, creating a much tortuous pathway molecules. new insights could be valuable widening application s...