A novel sensor material from amphiphilic polymer-grafted carbon black

摘要

The grafting of poly(N-isopropylacrylamide) and poly(N,N-diethylacrylamide) onto carbon black was achieved by the radical polymerization of the corresponding monomers in the presence of carbon black using 2,2'-azobisisobutylonitrile as an initiator. It was found that the electric resistance of the composite prepared from these amphiphilic polymer-grafted carbon blacks was extremely increased in various solvent vapors and contamination in n-hexane, and returned to initial resistance when it was transferred into air and pure n-hexane.