Lignin, Copolymerization Solvents

Acrylated lignin derivatives were copolymerized with MMA and S in dry methylene chloride with benzoyl peroxide and N,N-dimethyl anyline as catalyst. Reaction mixtures were poured onto Teflon molds, the solvent was evaporated at room temperature in the fume hood, and films were cured in an oven at 105°C for 6 hrs. Experimental details and results are given elsewhere (15). 

The copolymerization of C2H4 together with a diolefin, e.g., 1,7-octadiene, as comonomer produces a cross-linked polyethylene with rubber elasticity, insoluble in all organic solvents. With the aid of homogeneous, highly active Ziegler-Natta catalysts it is possible to polymerize olefins in the presence of starch, cellulose, or lignin. 

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