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Study of the separation of methanol/methyl acetate mixtures by pervaporation with PVA/PVP blend membranes |
| Authors: XU Xiaoli CHENG Xiaofei XIAO Tonghu* CHEN Shanmei |
| Units: Faculty of Materials Science and Chemical Engineering, NingBo University,NingBo 315211,China |
| KeyWords: pervaporation; PVA ;PVP; methanol; methyl acetate |
| ClassificationCode:TQ028.8 |
| year,volume(issue):pagination: 2010, 30(6):0-0 |
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Abstract: |
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Abstract: Poly(vinyl alcohol) (PVA)/Poly(vinyl pyrrolidone) (PVP) blend membranes crosslinked with 4,4’-diazostilbene-2,2’-disulfonic acid disodium salt were prepared and used to separate methanol/methyl acetate mixtures by pervaporation. The effects of DAS content, blending composition, operating temperature and feed composition were investigated. WhenDAS/PVP ratio was 1∶3,PVP was crosslinked well and the membrane had a good separation factor. With the increasing of the PVP content in the membrane, permeation flux and separation factor increased and then decreased. Membrane containing 30% PVP exhibited good performance and gave the highest separation factor 17.7. With increasing temperature and methanol concentration in feed, the flux increased and the separation factor decreased.
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Funds: |
| 浙江省自然科学基金(Y407353) |
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AuthorIntro: |
| 徐小莉(1984.10-),女,安徽铜陵人,硕士生,研究方向为膜分离技术。 |
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