4.6 Article

Fabrication of ceramic tube-supported tetraethyl-orthosilicate cross-linked polydimethylsiloxane membranes for separation of furfural-water mixture by pervaporation technology

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JOURNAL OF APPLIED POLYMER SCIENCE
卷 139, 期 25, 页码 -

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WILEY
DOI: 10.1002/app.52380

关键词

furfural separation; hydrophobic membrane; pervaporation; polydimethylsiloxane

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In this study, PDMS/TEOS hybrid materials with different TEOS ratios were synthesized and ceramic tube-supported membranes were fabricated. The results showed that the ceramic tube-supported PDMS/TEOS membranes exhibited good hydrophobicity and excellent thermal stability, and achieved high performance in the separation of furfural-water mixture by pervaporation.
In this study, polydimethylsiloxane/tetraethyl-orthosilicate (PDMS/TEOS) hybrid materials with different TEOS ratios were synthesized by cross-linking method. Ceramic tube-supported PDMS/TEOS membranes were fabricated by dip-coating method. Effect of TEOS content, feed concentration, and feed temperature through separation of a furfural-water mixture by pervaporation (PV) technology was investigated. The highest PV performance was obtained with the total flux of 1.19 kg/m(2)h with TEOS content of 1.8 g, furfural feed concentration of 30 wt.%, operating temperature, and vacuum pressure at 100 kPa and 50 degrees C, respectively. PDMS/TEOS was successfully synthesized and coated on ceramic tube-supported with a thickness of 15 mu m. The ceramic tube-supported membrane demonstrated good hydrophobicity with a contact angle of 109.5 degrees and excellent thermal stability at 450 degrees C. The obtained results demonstrated that the ceramic tube-supported PDMS/TEOS membrane is potent to be utilized for the separation of the furfural-water mixture by PV technology.

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