Utilization of composite membrane polyethyleneglycol-polystyrene-cellulose acetate from pineapple leaf fibers in lowering levels of methyl orange batik waste

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Delsy, E.V.Y.^1 ; Irmanto^1 ; Kazanah, F.N.^1

Department of Chemistry, Faculty of Mathematic and Natural Sciences, Jenderal Soedirman University, Purwokerto, Indonesia^1

关键词: Acetyl groups;    Carbonyl groups;    Cellulose acetate membrane;    Cellulose acetates;    Fourier transform infra reds;    ITS applications;    Phase-inversion method;    Pineapple leaf fiber;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012018/pdf
DOI  :  10.1088/1757-899X/172/1/012018

来源: IOP

【 摘 要 】

Pineapple leaves are agricultural waste from the pineapple that the fibers can be utilized as raw material in cellulose acetate membranes. First, made pineapple leaf fibers into pulp and then converted into cellulose acetate by acetylation process in four stages consisting of activation, acetylation, hydrolysis and purification. Cellulose acetate then used as the raw material to manufacture composite membrane with addition of polystyrene and poly (ethylene glycol) as porogen. Composite membrane is made using phase inversion method with dichloromethane-acetone as a solvent. The result of FTIR analysis (Fourier transform infra-red) showed that the absorption of the carbonyl group (C=O) is at 1643.10 cm-1and acetyl group (C-O ) at 1227.01 cm-1, with a molecular weight of 8.05 x 104g/mol and the contents (rate) of acetyl is 37.31%. PS-PEG-CA composite membrane had also been characterized by measuring the water flux values and its application to decrease methyl orange content (level) in batik waste. The results showed that the water flux value is of 25.62 L/(m2.hour), and the decrease percentage of methyl orange content in batik waste is 71.53%.