Cellulose acetate polyacrylonitrile grafted

Several graft copolymers were prepared based on the anionic polymerization method to overcome some of the major problems encountered in radical-initiated grafting. This method is used to prepare a living synthetic polymer with mono- or dicarbanions to react with modified cellulosic substrates under homogeneous conditions. For example, polyacrylonitrile carbanion was prepared to react with cellulose acetate to generate a cellulose acetate-polyacrylonitrile graft polymer [142]. 

Figure 4 shows the off-resonance proton decoupled C NMR spectrum of the cellulose acetate-polyacrylonitrile graft polymer. The spectrum of the graft polymer showed a) the carbonyl carbon of the acetate at 172 ppm, b) the nitrile carbon at 120, c) the carbon of the sugar at 101 ppm, d) the C2 -carbons of the sugar between 60-80 ppm, and e) the aliphatic carbons in the 10-20 ppm region. 

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