IONICALLY CROSSLINKED ALGINATE–CARBOXYMETHYL CELLULOSE BEADS FROM CORNSTALK (Zea mays) FOR CATIONIC DYES
Laila Nihayatul Khusna, Eny Yulianti, Lilik Miftahul Khoiroh
Department of Chemistry, Science and Technology of Faculty, Maulana Malik Ibrahim Malang
Beads Alginate carboxymethyl cellulose is made from corn cellulose extracted using the best solvent, 10% NaOH. This study uses BaCl2 crosslink with a concentration variation of 3%, 5%, and 10%. The purpose of this research is to study variations of BaCl2 crosslink on physical form, swelling power and mechanical strength of beads alginat carboxymethyl cellulose. The beads alginat carboxymethyl cellulose results were characterized using Fourier Transform Infra-Red, optical microscopy, digital penetrometer, Scanning Electron Microscopy-Energy, and UV-Vis. The best beads alginat carboxymethyl cellulose results in the calculation of crosslink 5% with a swelling power value of 97.1%. Variation in BaCl2 crosslink concentration affects the physical shape of beads, swelling ability, and mechanical strength. Cellulose compounds are shown in wave number 1021 cm-1, 889 cm-1, 1036 cm-1, and 1439 cm-1. FTIR beads alginate carboxymethyl cellulose spectra appear at wave number 1419-1429 cm-1. the highest adsorption capacity of BACMC against methylene blue is concentrated by beads with a concentration of 3%, with a large adsorption capacity of 14.75 mg / g.
Keywords: Cornstalk, Cellulose beads, Alginate, Crosslink