A series of amphoteric cellulosic graft copolymers
containing anionic carboxymethyl and cationic quaternary ammonium groups
were prepared by the graft copolymerization of carboxymethylcellulose(CMC) with dimethyldiallylammonium chloride(DMDAAC) using potassium permanganate/sulphuric acid initiation system under different conditions.Major factors affecting the polymerization reaction
such as the degree of substitution(DS) of CMC
the amount of DMDAAC
acid concentration and the amount of initiator
were studied
and the mechanism for grafting of DMDAAC onto CMC using the KMnO 4/H 2SO 4 redox system was elucidated.