A CARBOXYLATE ION EXCHANGER BASED ON POLYACRYLONITRILE FIBER AS A POTENTIAL COMPONENT OF NUTRIENT SUBSTRATES FOR PLANTS

Abstract

The acidity parameters and type of functional groups of the aminocarboxylate polyampholyte with prevailing carboxylate groups prepared from an industrial polyacrylonitrile fiber (Panion-110), have been determined. An algorithm for determining the type of functional groups based on the potentiometric titration data at different concentrations of the background electrolyte, has been proposed. Titration curves were calculated for the background electrolyte concentrations corresponding to soil and nutrient solutions for plants. It has been concluded that the ion exchanger is suitable as a component of the ion exchanging fibrous substrate for plants, carrying potassium ions.