Please use this identifier to cite or link to this item: https://doi.org/10.1002/aic.11198
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dc.titleMatrimid®/MgO mixed matrix membranes for pervaporation
dc.contributor.authorJiang, L.Y.
dc.contributor.authorChung, T.S.
dc.contributor.authorRajagopalan, R.
dc.date.accessioned2014-10-09T06:52:56Z
dc.date.available2014-10-09T06:52:56Z
dc.date.issued2007-07
dc.identifier.citationJiang, L.Y., Chung, T.S., Rajagopalan, R. (2007-07). Matrimid®/MgO mixed matrix membranes for pervaporation. AIChE Journal 53 (7) : 1745-1757. ScholarBank@NUS Repository. https://doi.org/10.1002/aic.11198
dc.identifier.issn00011541
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/89363
dc.description.abstractFor the first time, porous Magnesium oxide (MgO) particles have been applied to generate mixed matrix membranes (MMM) for the dehydration of iso-propanol by pervaporation. A modified membrane fabrication procedure has been developed to prepare membranes with higher separation efficiency. FESEM and DSC characterizations confirm that the MMMs produced have intimate polymer/particle interface; the nanosize crystallites on MgO surface may interfere with the polymer chain packing and induce chains rigidification upon the particle surface. It is observed that Matrimid®/MgO MMMs generally have higher selectivity, but lower permeability relative to the neat Matrimid® dense membrane. The highest selectivity is obtained with MMM containing 15 wt. % MgO. The selective sorption and diffusion of water in the MgO particles, and the polymer/particle interface properties combine to lead to the earlier phenomena. The investigation on the effect of feed water composition on the pervaporation performance reveals that the addition of MgO can show the selectivity-enhancing effects if the feed water concentration is lower than 30 wt. %. In the dehydration of isopropanol aqueous solution with 10 wt. % water, the selectivity of the MMMs is around 2,000, which is more than twice of 900 of neat polymeric membrane. This makes MMMs extremely suitable for breaking the azeotrops of water/iso-propanol. Gas permeation tests are also conducted using O2 and N2 to determine the microscopic structure of the MMMs, and to investigate the relationship between pervaporation and gas separation performance. © 2007 American Institute of Chemical Engineers.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/aic.11198
dc.sourceScopus
dc.subjectDehydration
dc.subjectIso-propanol
dc.subjectMagnesium oxide (MgO)
dc.subjectMixed matrix membrane (MMM)
dc.subjectPervaporation
dc.typeArticle
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1002/aic.11198
dc.description.sourcetitleAIChE Journal
dc.description.volume53
dc.description.issue7
dc.description.page1745-1757
dc.description.codenAICEA
dc.identifier.isiut000247713200011
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