Abstract
The synthesis of two new monomers containing a uracil unit and copolymers of the novel monomers with methyl methacrylate is described. Poly(styrene-acrylonitrile) (SAN) was modified by reaction with dicyandiamide in dry dimethyl sulfoxide, so that the acrylonitrile units were partially converted to 2,4-diamino-1,3,5-triazine moieties. The triazine rings in the terpolymer and uracil unit in the copolymer may form complementary triple hydrogen bonding sites. Blends of the copolymer containing uracil and terpolymer containing triazine ring were miscible owing to strong hydrogen bonding interaction between the two polymers. Miscibility and hydrogen bonding interaction of the blend system were investigated by DSC and FTIR.
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