Abstract
AbstractThe copolymer P(AM‐co‐4VP) of acrylamide (AM) and 4‐vinylpyridine (4VP) was synthesized by radical copolymerization in solution, and then the copolymer was quaternarized using dimethyl sulfate to produce cationic P(AM‐co‐4VP) (CPAV), a cationic polyacrylamide containing quaternary pyridine salt. Two series of CPAV have been synthesized. The structure and composition of the copolymer and the cationic copolymer were characterized by their FTIR, 1H NMR and ultraviolet spectra Flocculation and corrosion inhibition properties of the cationic copolymer were studied in detail and effects of cationic degree and molecular weight on the flocculation and corrosion inhibition properties were discussed. The results showed that cationic polyacrylamide containing quaternary pyridine salt possesses excellent flocculation, corrosion inhibition and other functions. The higher the degree of cationization, the better are these functions, and the molecular weight also effects the functions significantly. Copyright © 2003 Society of Chemical Industry
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