Pengaruh Lama Hidrolisis pada Kemampuan Absorpsi Air Selulosa Mikrobial-g-Poliakrilamida

Abstract

Microbial cellulose produced by microorganisms, especially Acetobacter genus. Microbial cellulose has high purity due to the absence of lignin and high crystallinity. The cellulose samples were hydrolyzed and subsequently modified by grafting and crosslinking. The products showed various water absorption capacity. The hydrolysis was performed in 1, 2, 3, 4, 5 and 6 hours. The hydrolyzed cellulose was then synthesized by graft and crosslink copolymerization using acrylamide as monomer and N,N’-methylene-bis-acrylamide as the crosslinker. The functional groups of the product were characterized by using infrared spectroscopy. Infrared spectra showed that cellulose has been successfully by the presence of C=O stretching absorption and –NH2 stretching. The results revealed that hydrolysis duration affected water absorption capacity. Water absorption capacity increased up to 4 hours hydrolysis time and subsequently remained constant, while nitrogen levels tend to be constant.