THE ANION-EXCHANGE CAPACITY OF DIETHYLAMINOACETYL CELLULOSE (DEAA-CELLULOSE) AND THE PREPARATION OF CHLOROACETYL CELLULOSE AND DEAA-CELLULOSE BY HE REACTION IN VAPOR PHASE

Abstract

DEAA-cellulose was found to have ability to exchange an anion. The anion-exchange capacity of DEAA-cellulose was weaker than that of diethylaminoethyl cellulose. DEAA-cellulose must be activated by aqueous ammonia due to the unstable diethylaminoacetyl group. The intermediate chloroacetyl cellulose was prepared in vapor phase. In this case, the addition of a catcher for hydrochloric acid, such as sodium bicarbonate, was necessary to prevent dehydration and carbonization of cellulose. Similarly, DEAA-cellulose was prepared from chloroacetyl cellulose in vapor phase.