NEW ANION-EXCHANGE RESIN BASED ON CROSS-LINKED SAWDUST CONTAINING TERTIARY AMINO GROUPS GRAFTS

摘要: A new anion-exchange resin is prepared through the reaction of sawdust, as an inexpensive cellulosic backbone, melamine formaldehyde precondensate (MF), a cross-linking, reinforcing, and binding agent, along with triethanolamine hydrochloride (TEA·HCl), catalyst for corereactive cross linker, at elevated temperature so that insoluble cross-linked networks are produced pendent tertiary amino groups. Factors affecting formation, such reactant concentration, liquor ratio, time, temperature, studied. Proper conditions selected to prepare anion exchanger having content 88 mEq/100 g. Potentiometric titration showed this weak base strength pKb 10.