Caractérisation des membranes de pervaporation en polyvalérolactone et polycaprolactone pour la deshydratation de l'éthanol

Rahal, Achour; Mas, André; Elharfi, Ahmed; Dobreva-Schué, R.; Schué, François

doi:10.1016/s0014-3057(97)00071-2

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Rahal et al prepared poly (caprolcatone) dense membrane for ethanol dehydration. However, the selectivity factor was 4.5 which is considered low in comparison with other studies on ethanol dehydration …”

Section: Introductioncontrasting

confidence: 55%

“…However, the selectivity factor was 4.5 which is considered low in comparison with other studies on ethanol dehydration. 18 To improve pervaporation performance of membranes, different modification methods such as cross-linking, blending, and filling need to be used. 19 Blending is an easy approach to create a membrane with optimal properties such as permeability, selectivity, and thermal/ mechanical stability by combining excellent properties of the 2 (or more) homopolymers.…”

Section: Introductionmentioning

confidence: 99%

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Poly (caprolactone)/poly (ethylene glycol) pervaporation blend membranes: Synthesis, characterization, and performance

Afsar

Saljoughi

Mousavi

2018

Polymers for Advanced Techs

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Poly (caprolactone) membranes with addition of different poly (ethylene glycol) concentrations were prepared for separation of water/isopropanol azeotropic mixture by pervaporation process. Different characterization tests including Fourier transform infrared, scanning electron microscopy, water contact angle, and thermogravimetric analysis were carried out on the prepared membranes. In addition, the effect of poly (ethylene glycol) PEG content on the swelling degree and the performance of the prepared membranes in pervaporation process were investigated. According to the obtained results, all the membranes were water selective and the blend membrane containing 3 wt% PEG exhibited the best pervaporation performance with a water flux of 0.517 kg/m2 hour and separation factor of 1642 at the ambient temperature. Hydrophilicity improvement of the blend membranes was confirmed by constant decrease in water contact angle of the membranes as PEG content increased in the casting solution. Scanning electron microscopy cross‐sectional images indicated that the blend membranes containing PEG had a closed cellular structure. Furthermore, mechanical and thermal properties of the membranes decreased by adding PEG.

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Section: Introductioncontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 99%