COMPOSITION ALGINATE: CARBOKSIMETIL CELLULOSE ON MAKING BEADS FROM CORNSTALK
Anggun Cahyaning Pertiwi, Eny Yulianti, Lilik Miftahul Khoiroh, Febi Yusniyanti
Department of Chemistry, Faculty of Science and Technology, UIN Maulana Malik Ibrahim Malang
Cellulose extracted of corn stalk waste can be used to synthesize CMC. CMC synthesize characterized by FTIR and XRD. Alginate: CMC (AC) beads were made by dropping technique through ionic gelation method with crosslinking CaCl2 3%. AC was characterized using Fourier Transform Infra-Red (FTIR) to know the function group, swelling test to know the swelling power, and SEM-EDX to know the surface characteristics. The optimum composition of AC composite beads was 1:2 based on the formation of beads, the highest swelling power value 175.5%, and the diameter was 26.64%. The data FTIR AC showed that wave number at 819 cm-1 which indicate the presence of Ca-alginate linkage. The data SEM-EDX of AC without CMC 1:0 showed a smooth surface, while the surface of AC 1:2 is rough.
Keyword: alginate-carboxymethyl cellulose, beads, cornstalk