synthesis and characterization of novel nanocomposite chitosan membranes for ethanol dehydration
نویسندگان
چکیده
polyacrylonitril (pan)-supported chitosan (cs) nanocomposite membranes were prepared by cross-linking the cs with 3-aminopropyl-triethoxysilane (apteos) via sol-gel method. pervaporative performances of the cs-sio2/pan membrane for dehydration of aqueous alcohol solutions were investigated. from sem cross-sectional images of the membrane, the spongy pores and the finger-like pores were found in cortex and intermediate layer. the pan microporous substrate and the top layer were about 100 and 7.4 µm thick, respectively. the separation factor and permeation flux of the synthesized cs/pan and cs-sio2/pan membranes indicated that introducing 5% of nanosilica to skin layer of the composite membrane improved its pervaporative properties. at 30 , a separation factor of 20.03 and 34.25 were achieved for cs/pan and cs-sio2/pan membranes, respectively.
منابع مشابه
Synthesis and characterization of novel nanocomposite Chitosan membranes for Ethanol dehydration
Polyacrylonitril (PAN)-supported chitosan (CS) nanocomposite membranes were prepared by cross-linking the CS with 3-aminopropyl-triethoxysilane (APTEOS) via sol-gel method. Pervaporative performances of the CS-SiO2/PAN membrane for dehydration of aqueous alcohol solutions were investigated. From SEM cross-sectional images of the membrane, the spongy pores and the finger-like pores we...
متن کاملSynthesis and characterization of novel nanocomposite Chitosan membranes for Ethanol dehydration
Polyacrylonitril (PAN)-supported chitosan (CS) nanocomposite membranes were prepared by cross-linking the CS with 3-aminopropyl-triethoxysilane (APTEOS) via sol-gel method. Pervaporative performances of the CS-SiO2/PAN membrane for dehydration of aqueous alcohol solutions were investigated. From SEM cross-sectional images of the membrane, the spongy pores and the finger-like pores we...
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Chitosan–silver (CS–Ag) nanocomposite materials were synthesized by a simple chemical method. The synthesized CS–Ag nanocomposite contains 20 wt% silver. Silver nanoparticles were synthesized by chemical reduction method as well. The CS–Ag nanocomposite was characterized using Field emission scanning electronic microscope (FESEM), X-ray diffraction (XRD) and Fourier transform infrared spectrosc...
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عنوان ژورنال:
international journal of nano dimensionجلد ۵، شماره Issue ۵، صفحات ۴۴۱-۴۴۶
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