CP/MAS~(13)C NMR Characterization of Carbon Membrane Derived from Lignin-phenol-formaldehyde Resin

Carbon membrane derived from lignin-phenol-formaldehyde resin is analysed by using CP/MAS 13C NMR spectrum technology. The results showed that the change of lignin amount influenced the structure of carbon membrane such as the structure of lateral chain alkyl carbons、 non-phenol syrigyl and hydroxymethyl carbons in the carbon membrane.