Effect of Evaporation Time on Separation Performance of Polysulfone/Cellulose Acetate (PSF/CA) Membrane

International Conference on Chemistry and Material Science 2017

化学;材料科学

Syahbanu, Intan^1 ; Piluharto, Bambang^2 ; Khairi, Syahrul^3 ; Sudarko^2

Departement of Chemistry, Faculty of Mathematics and Natural Science, Universitas Tanjungpura, Indonesia^1

Departement of Chemistry, Faculty of Mathematics and Natural Science, Universitas Jember, Indonesia^2

Departement of Chemical Engineering, Faculty of Technique, Universitas Tanjungpura, Indonesia^3

关键词: Bacterial cellulose;    Characteristic peaks;    Commercial cellulose;    Fourier transform infra red (FTIR) spectroscopy;    N-methyl-2-pyrrolidone;    Phase inversion techniques;    Pore-forming agents;    Separation performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012040/pdf
DOI  :  10.1088/1757-899X/299/1/012040

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Polysulfone and cellulose acetate are common material in separation. In this research, polysulfone/cellulose actetate (PSF/CA) blend membrane was prepared. The aim of this research was to study effect of evaporation time in casting of PSF/CA membrane and its performance in filtration. CA was obtained by acetylation process of bacterial cellulose (BC) from fermentation of coconut water. Fourier Transform Infra Red (FTIR) Spectroscopy was used to examine functional groups of BC, CA and commercial cellulose acetate. Subtitution of acetyl groups determined by titration method. Blend membranes were prepared through phase inversion technique in which composition of PSF/PEG/CA/NMP(%w) was 15/5/5/75. Polyethyleneglycol (PEG) and N-methyl-2-pyrrolidone (NMP) were act as pore forming agent and solvent, respectively. Variation of evaporation times were used as parameter to examine water uptake, flux, and morphology of PSF/CA blend membranes. FTIR spectra of CA show characteristic peak of acetyl group at 1220 cm-1indicated that BC was acetylated succesfully. Degree of subtitution of BCA was found at 2.62. Highest water flux was performed at 2 bar obtained at 106.31 L.m-2.h-1at 0 minute variation, and decrease as increasing evaporation time. Morphology of PSF/BCA blend membranes were investigated by Scanning Electron Microscopy (SEM) showed that porous asymetric membrane were formed.