ІНФРАЧЕРВОНА СПЕКТРОСКОПІЯ В ДОСЛІДЖЕННІ СТРУКТУРНИХ ОСОБЛИВОСТЕЙ МЕМБРАН З МОДИФІКОВАНОГО ЦЕЛЮЛОЗНОГО ВОЛОКНА

This study explores the use of modified cellulose membranes for water purification, focusing on the removal of color from sodium humate solutions. Cellulose, a renewable and eco-friendly polymer, was modified with a 1:1 mixture of monoethanolamine and epichlorohydrin at consumption of 5%, 10%, and 15%. The membranes (80 g/m²) were tested on 100 mg/dm³ sodium humate solutions. Color removal efficiency was highest (98%) with the 15% modified membrane. The infrared spectra confirmed successful modification by the appearance of a peak at 1598 cm⁻¹. The results demonstrate the potential of chemically modified cellulose membranes for sustainable water treatment applications.