Performance of PDMS membranes in pervaporation: Effect of silicalite fillers and comparison with SBS membranes

Dobrak, Agnieszka; Figoli, Alberto; Chovau, Simon; Galiano, Francesco; Simone, Silvia De; Vankelecom, Ivo F.J.; Drioli, Enrico; Bruggen, Bart Van der

doi:10.1016/j.jcis.2010.02.023

Cited by 115 publications

(51 citation statements)

References 44 publications

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“…One of the most effective membrane processes for aroma recovery is pervaporation. Besides the above-mentioned advantages, suitable pervaporation membranes are very selective for several chemical groups that constitute typical beverages aroma profiles [28][29][30][31]. During last years, pervaporation process was successfully applied for recovering aroma compounds from fruit juices for subsequent addition to the same juice, after concentration by evaporation [32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Non-alcoholic beer—A new industrial process

Catarino

Mendes

2011

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 99%

Non-alcoholic beer—A new industrial process

Catarino

Mendes

2011

Separation and Purification Technology

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“…5 And for the separation of dilute ethanol aqueous solution, polydimethylsiloxane (PDMS) membrane is the most wellstudied representative silicone-based polymeric membrane. [6][7][8][9][10][11][12][13][14][15][16][17][18][19] Generally, the reported separation factors of polymer-supported PDMS membranes for the ethanol/water system have ranged from 4.4 to 10.8 with an average of about 7-8. 20 However, due to its large molecular weight, the thickness of PDMS membrane is usually large, which causes low ux.…”

Section: Introductionmentioning

confidence: 99%

Copolymerization modification of poly(vinyltriethoxysilane) membranes for ethanol recovery by pervaporation

et al. 2017

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In this study, a copolymerization modification method is used to modify the rigid structure of a high-flux poly(vinyltriethoxysilane) (PVTES) membrane, which was prepared from VTES monomers in our previous work, to further enhance its separation factor. A value of R/Si, which could characterize the density of organic groups and the chain flexibility in membrane materials, is introduced here to guide the selection of modification chemicals. Modifiers with different polymerization degree but the same flexible chain unit (DMDES, HSO and PDMS) are chosen to be copolymerized with PVTES. Analysis results show that the PVTES-HSO membrane possesses lower thickness, higher amount of hydrophobic groups, and an inner structure with greater chain flexibility and lower crystallinity, leading to the best pervaporation (PV) performance among these modified membranes, which is much better than the original PVTES membrane. Furthermore, PVTES-HSO membranes with different R/Si values are prepared to optimize their PV performance. And the optimal PVTES-HSO membrane (R/Si ¼ 1.4) shows the best performance with the separation factor of 6.6 and flux up to 8160 g m À2 h À1 when separating 9 wt% ethanol aqueous solution at 35 C.

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“…To improve the PV performance of existing PDMS membranes, inorganic particles have been added into the polymer dope solutions. It was found that the physicochemical stability and separation performance were evidently improved by incorporating hydrophobic zeolites (ZSM-5 or silicalite-1) in PDMS matrix [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%