Polysiloxanes with pendent bulky groups having amino-hydroxy functionality: Structure–permeability correlation

Senthilkumar, U.; Reddy, B. S. R.

doi:10.1016/j.memsci.2007.01.014

Cited by 46 publications

(24 citation statements)

References 25 publications

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“…, N the permeate ow in cm 3 s À1 , l the membrane thickness in cm, A the membrane area in cm 2 and p f and p p are, respectively, the feed and permeate pressure in cmHg.…”

Section: Steady-state Gas Permeability and Selectivity Measurementsmentioning

confidence: 99%

Mesoporous KIT-6 silica–polydimethylsiloxane (PDMS) mixed matrix membranes for gas separation

et al. 2015

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In this study, we have explored for the first time the use of the mesoporous KIT-6 silica as an additive to enhance the gas permeability and separation characteristics of PVDF supported polydimethylsiloxane (PDMS) with filler loadings varying between 0 and 25 wt%. The KIT-6 silica was synthesized by a templating method and functionalized through silanization confirmed via Fourier transform infrared spectroscopy. The SEM images of the MMMs suggested that p-KIT-6 silica particles could embed well into the PDMS matrix and the MMMs could be defect free. With an optimum loading of 2 wt%, the C 4 H 10 permeability and C 4 H 10 /N 2 ideal selectivity of the MMM were shown to increase by 464% and 248% compared with the neat polymer membrane, respectively. In addition, the optimum membrane was also evaluated for CO 2 /N 2 separation, which proved that the permeability and selectivity increasedsimultaneously. An interface morphology has also been proposed to explain the separation phenomenon of the MMM reasonably. Taken all together, it is expected that the mesoporous KIT-6 silica would be an attractive additive to enhance the gas separation performances of polymer membranes.

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“…, N the permeate ow in cm 3 s À1 , l the membrane thickness in cm, A the membrane area in cm 2 and p f and p p are, respectively, the feed and permeate pressure in cmHg.…”

Section: Steady-state Gas Permeability and Selectivity Measurementsmentioning

confidence: 99%

Mesoporous KIT-6 silica–polydimethylsiloxane (PDMS) mixed matrix membranes for gas separation

et al. 2015

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“…The introduction of amine functionalities into poly(ethylene glycol)diacrylate membranes enhanced the membrane separation performances for CO 2 /H 2 , which were above the Robeson's trade-off bound [60] . The functionalization of poly(dimethylsiloxane) (PDMS) membranes with 2,6-diisopropyl phenyl amino-hydroxy groups resulted in an increase of CO 2 / CH 4 permeselectivity without a significant change in permeabilities [61] . An interesting study was reported by Chung and co-workers by making use of the reactive sites from amine groups in various diamines (i.e.…”

Section: Chemical Modifi Cation and Physical Blendingmentioning

confidence: 99%

CO2 Selective Separation Membranes

Yao

Wang

2013

Eco- And Renewable Energy Materials

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Over the past two decades, membrane technology has attracted tremendous attention at CO 2 separation from other gases, which has shown great potential to significantly improve energy efficiency and reduce cost associated with processes. The membrane structures and chemistry properties greatly affect their CO 2 separation performances, including selectivity and permeability. In recent years, there has been significant progress in the development of CO 2 -selective membranes. This chapter reviewed the recent activities relating to the fabrication and separation performances of polymeric, inorganic and mixed-matrix membranes for CO 2 separation purposes.

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“…In polymeric membranes, the decrement of gas permeability emanating from the introduction of polar substituents due to the reduced free volume inside the polymer matrix is a well established concept [55][56][57][58][59][60]; on the contrary, the presence of spherical side groups is known to bring forth the augmentation in gas permeability owing to the increased excess free volume and/or enhanced local mobility [61][62][63][64][65][66]. The t-butylcarbamates of cellulose derivatives (1a-4a) possess both the aforementioned features and the local mobility of the side groups playing a dominant role resulted in the permeability enhancement which was quite substantial for cellulose acetate derivatives, especially for 4a.…”

Section: Gas Permeation Propertiesmentioning

confidence: 99%

“…The reduction in the S values can be accounted for by the attenuated fractional free volume of the derivatized polymers (1a-4a) because of the presence of polar carbamate linkages [55][56][57][58][59][60].…”

Section: Gas Diffusivity and Solubilitymentioning

confidence: 99%

Synthesis, characterization, and gas permeation properties of t-butylcarbamates of cellulose derivatives

Khan

Shiotsuki

Nishio

et al. 2008

Journal of Membrane Science

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Polysiloxanes with pendent bulky groups having amino-hydroxy functionality: Structure–permeability correlation

Cited by 46 publications

References 25 publications

Mesoporous KIT-6 silica–polydimethylsiloxane (PDMS) mixed matrix membranes for gas separation

Mesoporous KIT-6 silica–polydimethylsiloxane (PDMS) mixed matrix membranes for gas separation

CO2 Selective Separation Membranes

Synthesis, characterization, and gas permeation properties of t-butylcarbamates of cellulose derivatives

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