The permselectivity of polyorganosiloxanes containing ester functionalities

Ashworth, Anthony J.; Brisdon, Brian J.; England, R.; Reddy, B. S. R.; Zafar, I.

doi:10.1016/s0376-7388(00)80810-8

Cited by 29 publications

(12 citation statements)

References 4 publications

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“…Limitation with this polymer is its poor mechanical properties and poor selectivity value for a particular gas in a mixture of gases. Therefore, many investigations have been carried out to improve the mechanical properties of PDMS and also to obtain a high permselective membrane by introducing functional groups to the side or the main chains of PDMS [13,14] and also a block copolymer with polyamide, polyimide and polycarbonate [15][16][17]. The study of gas transport property through polyurethane membranes is especially interesting because the molecular structure of the polymer chain can be easily changed.…”

Section: Introductionmentioning

confidence: 99%

Poly(dimethylsiloxane-urethane) membranes: Effect of hard segment in urethane on gas transport properties

Madhavan

Reddy

2006

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Poly(dimethylsiloxane-urethane) membranes: Effect of hard segment in urethane on gas transport properties

Madhavan

Reddy

2006

Journal of Membrane Science

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“…It is a well known fact that CO 2 permeation increases when there is a chemical affinity with some molecular groups in the membrane [167]. This has been observed for the fluorogroup [127], phenyl group [167], and carbonyl group in esters and ketones [128,129]. As noted in the discussion of hybrid membranes, there have been numerous attempts to take advantage of these chemical affinities in order to prepare membranes with high CO 2 selectivity and permeability.…”

Section: Hybrid Membranesmentioning

confidence: 95%

“…Polysiloxanes membranes exhibit a high permeability accompanied by a low selectivity. Ashworth et al [128,129] have studied the effect of a side-chain ester functionality in polysiloxane membrane on the permeation properties of CO 2 , CH 4 , and N 2 . They reported that there was little change in the relative diffusivity of CO 2 to CH 4 (or N 2 ) at 35 °C with an increase in ester functionality, but the higher permselectivity of CO 2 /CH 4 or CO 2 /N 2 resulted from an increase in the relative solubility of CO 2 to CH 4 (or N 2 ).…”

Section: Rubbery Polymeric Membranesmentioning

confidence: 99%

A Review of Carbon Dioxide Selective Membranes: A Topical Report

Shekhawat¹,

Luebke²,

Pennline³

2003

101

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The atmospheric concentration of anthropogenic carbon dioxide (CO 2 ) has been increasing since the start of industrialization in the mid 19th century, and the rate is increasing. It is highly unlikely that fossil fuel combustion, the main contributor to anthropogenic CO 2 , will be replaced in the foreseeable future. Therefore, CO 2 capture and storage offer a new set of options for reducing greenhouse gas emissions, in addition to the current strategies of improving energy efficiency and increasing the use of renewable energy resources. Carbon dioxide selective membranes provide a viable energy-saving alternative for CO 2 separation, since membranes do not require any phase transformation. This review examines various CO 2 selective membranes for the separation of CO 2 and N 2 , CO 2 and CH 4 , and CO 2 and H 2 from flue or fuel gas. This review attempts to summarize recent significant advances reported in the literature about various CO 2 selective membranes, their stability, the effect of different parameters on the performance of the membrane, the structure and permeation properties relationships, and the transport mechanism applied in different CO 2 selective membranes. Finally, the future direction for CO 2 selective membranes is proposed. Hybrid organic-inorganic membranes have become an expanding field of research, as the introduction of organic molecules can improve the characteristics of a matrix. Hydrotalcite-type materials, perovskite-type oxides, lithium zirconate, and lithium silicate are also suggested as candidate materials for high temperature CO 2 selective membranes.

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“…4. Specific interactions between the penetrant and the polymer that increase solubility dramatically increase the permeability of the polymer to that penetrant (Ashworth, 1991).…”

Section: Rubbery Polymersmentioning

confidence: 99%

Membrane-Mediated Extraction and Biodegradation of Volatile Organic Compounds From Air

Peretti¹,

Shepherd²,

Clayton³

et al. 2005

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The permselectivity of polyorganosiloxanes containing ester functionalities

Cited by 29 publications

References 4 publications

Poly(dimethylsiloxane-urethane) membranes: Effect of hard segment in urethane on gas transport properties

Poly(dimethylsiloxane-urethane) membranes: Effect of hard segment in urethane on gas transport properties

A Review of Carbon Dioxide Selective Membranes: A Topical Report

Membrane-Mediated Extraction and Biodegradation of Volatile Organic Compounds From Air

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