Water–alcohol separation by pervaporation through chemically modified poly(amidesulfonamide)s

Chan, Wing Hong; Ng, Ching Fai; Lam‐Leung, Suei Yee; He, Xumin

doi:10.1016/s0376-7388(99)00079-4

Cited by 18 publications

(11 citation statements)

References 20 publications

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“…Compared with PDMS membrane, alkyl grafted PDMS membranes exhibited a lower Δ δ E /Δ δ W and this value decreased with the increase of alkyl grafting ratio and alkyl chain length (Table ). This implies that the sorption selectivity toward EA increased with the increase of alkyl grafting ratio and alkyl chain length . However, the diffusion selectivity toward EA varied in the opposite way.…”

Section: Resultsmentioning

confidence: 94%

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

Zhou

Chen

et al. 2016

J of Applied Polymer Sci

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To improve the pervaporation performance of PDMS membrane, alkyl groups with different chain length were grafted into PDMS matrix. The prepared membranes were characterized by ATR-IR, DSC, TGA, PALS, and tensile testing. The effects of alkyl grafting on pervaporation performance of PDMS membrane were investigated in separation of ethyl acetate/water mixture. Experimental results show that the separation factor of PDMS membrane is largely improved by alkyl grafting because of the enhanced preferential sorption of ethyl acetate, and this improvement depends on alkyl grafting ratio and alkyl chain length. The total flux of PDMS membrane reduces after alkyl grafting owing to the decreased free volume. When grafting ratio is above 6.9%, membrane grafted with shorter alkyl groups is preferred for pervaporation. The best pervaporation performance is achieved by 9% octyl grafted PDMS membranes with a separation factor of 592 and a total flux of 188 gm 22 h 21 in separation of 1% ethyl acetate/water mixture at 40 8C. Moreover, this octyl grafted PDMS membrane also exhibits excellent separation performance in removal of butyl acetate, methyl-tert-butyl ether, and n-butanol from water.

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Section: Resultsmentioning

confidence: 94%

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

Zhou

Chen

et al. 2016

J of Applied Polymer Sci

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“…Table 3 gives a comparison of the PV performance data of other membranes used in PV separation of water + isopropanol mixtures [33][34][35][36]. It is realized that the performance of the plain CS membrane is not satisfactory due to larger free volume between the polymer chains.…”

Section: Comparison Of Pv Results With Literaturementioning

confidence: 99%

Pervaporation dehydration of isopropanol using blend membranes of chitosan and hydroxypropyl cellulose

Veerapur

Gudasi

Aminabhavi

2007

Journal of Membrane Science

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“…Considerable literature on the successful dehydration of isopropanol by PV is available. Table 1 gives a comparison of PV performance data of other membranes used in PV separation of isopropanol-water mixtures [20][21][22][23][24]. It is realized that performance of pure CS membrane is not satisfactory due to larger free volume between the molecular chains.…”

Section: Introductionmentioning

confidence: 99%

Pervaporation separation of isopropanol/water mixtures through crosslinked chitosan membranes

Devi

Smitha

Sridhar

et al. 2005

Journal of Membrane Science

195

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Water–alcohol separation by pervaporation through chemically modified poly(amidesulfonamide)s

Cited by 18 publications

References 20 publications

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

Pervaporation dehydration of isopropanol using blend membranes of chitosan and hydroxypropyl cellulose

Pervaporation separation of isopropanol/water mixtures through crosslinked chitosan membranes

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