Hybrid membrane materials comprising organic polymers with rigid dispersed phases

Moore, Theodore T.; Mahajan, R. R.; Vu, De Q.; Koros, William J.

doi:10.1002/aic.10029

Cited by 319 publications

(268 citation statements)

References 41 publications

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“…Firstly, the well-defined zeolite structure is usually not susceptible to the presence of interacting molecules therefore essentially no swelling occurs to the zeolite regions of the filled membrane [15]. Secondly, the PDMS polymer chains near the zeolite regions may be restrained by the interfacial interactions [16,17]. The filler particles therefore act as the physical cross-linker stations for the surrounding polymer chains.…”

Section: The Effects Of Zsm-5 Loading On the Membrane Performancementioning

confidence: 99%

Separation of 1-butanol/2,3-butanediol using ZSM-5 zeolite-filled polydimethylsiloxane membranes

Shao

Kumar

2009

Journal of Membrane Science

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Mixed matrix membranes were prepared by incorporating ZSM-5 zeolite particles into polydimethylsiloxane. A uniform dispersion of the zeolite in the membrane was obtained. The membranes were characterized with scanning electron microscopy, and the effects of zeolite loading on membrane performance were evaluated. It was found that 80 wt.% ZSM-5 loading was optimal for selectivity. Further increase in the zeolite loading either improved the selectivity slightly or even lowered the membrane selectivity while the membrane permeability was consistently reduced. The improved separating performance of the filled membranes was attributed to the filler-polymer interactions, and the mass transfer contribution of surface flow through the zeolite pores. The advantage of the improved membrane performance was demonstrated in a simulated continuous operation enriching 2,3-butanediol in a mixture with 1-butanol from 5 to 99.5 wt.% as a retentate using both the filled and un-filled PDMS membranes. Results showed that the filled PDMS membrane improved the recovery of 2,3-butanediol significantly while achieving the same product purity.Crown

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Section: The Effects Of Zsm-5 Loading On the Membrane Performancementioning

confidence: 99%

Separation of 1-butanol/2,3-butanediol using ZSM-5 zeolite-filled polydimethylsiloxane membranes

Shao

Kumar

2009

Journal of Membrane Science

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“…In this case, the most adsorption capacity or condensable component will adsorb and diffuse more effectively through the particles while the less adsorption capacity will permeate slowly. 40 When using these large pore size rigid materials, it is the gas feed mixture that determines surface flow or molecular sieving as the dominant mechanism for transport. An example of this kind of filler is activated carbon.…”

Section: Polymer-filler Compatibilitymentioning

confidence: 99%

Mixed Matrix Membranes for Gas Separation Applications

Carreon¹,

Dahe²,

Feng³

et al. 2017

Membranes for Gas Separations

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Mixed matrix membranes (MMMs) have gained lot of interest in the research community over the last few years in order to overcome the performance trade-off shown by the polymeric membranes. An MMM utilizes the benefits of both polymeric and inorganic materials and has the potential to show very high performance without much increase in the cost of fabrication. But the fabrication of an MMM without conceding the mechanical properties is very challenging. In this chapter, the materials selection and fabrication techniques of MMM in both flat sheet and hollow fiber configurations are discussed. Formation of defects at the interface is one of the biggest challenges in fabricating the MMM. Different techniques used in the literature to compatibilize the polymer and particle were summarized. In addition, the recent progress of MMM for gas separation applications and performance prediction models were provided in detail.

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“…Therefore, it is highly desirable to provide an alternate cost-effective nanomembrane in a position above the trade-off curves between permeability and selectivity [19]. Mixed-matrix membranes (MMMs) are considered as hybrid membranes containing liquid, solid, or both liquid and solid fillers embedded in a polymer matrix [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. They are densely packed polymer membranes with organic or inorganic nanoparticles introduced into their structure.…”

Section: Concept Of Mixed-matrix Nanomembranesmentioning

confidence: 99%

“…Investigations have shown that the interfacial region, which is a transition phase between the continuous polymer and dispersed sieve phases, is of particular importance in successful MMM formation [29,34,35].…”

Section: Solid-polymer Mixed-matrix Nanomembranesmentioning

confidence: 99%