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

• Published in: IOP conference series. Materials Science and Engineering 2017-02, Vol.172 (1), p.12018
• Main Authors: Delsy, E V Y, Irmanto, Kazanah, F N
• Format: Article
• Language: English
• Subjects: Acetylation; Agricultural wastes; Carbonyl groups; Carbonyls; Cellulose acetate; Dichloromethane; Dyes; Fibers; Fourier transforms; Membranes; Pineapples; Polyethylene glycol; Polystyrene resins; Raw materials
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/172/1/012018

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-1 and acetyl group (C-O ) at 1227.01 cm-1, with a molecular weight of 8.05 x 104 g/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%.