MWCNTs covalently grafted cellulose film was fabricated by reacting imidazolides–MWCNTs with cellulose. In contribution of mechanicalstretching,MWCNTswerealignedwithcellulosechains in the M/C film. The aligned MWCNTs improved not only its mechanical property, but also electron pathways in the M/C paper. The M/C paper was investigated as a chemical vapor sensing material. Since MWCNTs grafted cellulose is one of the representative polar polymers having many hydroxyl groups, four polar solvent vapors were selected as test analytes. The M/C paper showed not
only reversible and fast relative resistance response for the tested analytes, but also differentiated its response depending on the concentration of the analytes. For 1-propanol, the M/C paper showed linear response to the concentration. It indicates that the M/C paper
can be a candidate to identify n-propanol. Since cellulose is biocompatible and biodegradable, the M/C paper can be expanded its applications to biomolecules sensing.