Syndiotactic polypropylene copolymer membranes and their performance for oxygen separation

Ma Eulalia Vanegas; Raúl Quijada; Suzana P. Nunes; Wilfredo Yave

doi:10.1016/j.memsci.2009.10.033

Syndiotactic polypropylene copolymer membranes and their performance for oxygen separation

Ma Eulalia Vanegas^*, Raúl Quijada, Suzana P. Nunes, Wilfredo Yave

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Syndiotactic poly(propylene-α-olefin) copolymers with controlled microstructure and desired properties for oxygen enrichment have been synthesized via metallocene catalysts. The controlled incorporation of comonomers as pendant branch mainly improved the oxygen permeability, but the oxygen/nitrogen selectivity dropped around 20%. By controlling the amount and length of the branches in the syndiotactic polypropylene, the permeability of the membrane was enhanced up to 12-fold and it is comparable to typical commercial polymers used for this application. In contrast with conventional commercial polypropylene, copolymers with a large amount of comonomer were soluble in cyclohexane, allowing the manufacture of composite membranes with high permeance.

Original language	English (US)
Pages (from-to)	34-40
Number of pages	7
Journal	Journal of Membrane Science
Volume	348
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2009.10.033
State	Published - Feb 15 2010

Keywords

Composite membranes
Gas separation
Oxygen enrichment
Polyolefin membranes
Syndiotactic polypropylene

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/j.memsci.2009.10.033

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title = "Syndiotactic polypropylene copolymer membranes and their performance for oxygen separation",

abstract = "Syndiotactic poly(propylene-α-olefin) copolymers with controlled microstructure and desired properties for oxygen enrichment have been synthesized via metallocene catalysts. The controlled incorporation of comonomers as pendant branch mainly improved the oxygen permeability, but the oxygen/nitrogen selectivity dropped around 20%. By controlling the amount and length of the branches in the syndiotactic polypropylene, the permeability of the membrane was enhanced up to 12-fold and it is comparable to typical commercial polymers used for this application. In contrast with conventional commercial polypropylene, copolymers with a large amount of comonomer were soluble in cyclohexane, allowing the manufacture of composite membranes with high permeance.",

keywords = "Composite membranes, Gas separation, Oxygen enrichment, Polyolefin membranes, Syndiotactic polypropylene",

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T1 - Syndiotactic polypropylene copolymer membranes and their performance for oxygen separation

AU - Vanegas, Ma Eulalia

AU - Quijada, Raúl

AU - Nunes, Suzana P.

AU - Yave, Wilfredo

PY - 2010/2/15

Y1 - 2010/2/15

N2 - Syndiotactic poly(propylene-α-olefin) copolymers with controlled microstructure and desired properties for oxygen enrichment have been synthesized via metallocene catalysts. The controlled incorporation of comonomers as pendant branch mainly improved the oxygen permeability, but the oxygen/nitrogen selectivity dropped around 20%. By controlling the amount and length of the branches in the syndiotactic polypropylene, the permeability of the membrane was enhanced up to 12-fold and it is comparable to typical commercial polymers used for this application. In contrast with conventional commercial polypropylene, copolymers with a large amount of comonomer were soluble in cyclohexane, allowing the manufacture of composite membranes with high permeance.

AB - Syndiotactic poly(propylene-α-olefin) copolymers with controlled microstructure and desired properties for oxygen enrichment have been synthesized via metallocene catalysts. The controlled incorporation of comonomers as pendant branch mainly improved the oxygen permeability, but the oxygen/nitrogen selectivity dropped around 20%. By controlling the amount and length of the branches in the syndiotactic polypropylene, the permeability of the membrane was enhanced up to 12-fold and it is comparable to typical commercial polymers used for this application. In contrast with conventional commercial polypropylene, copolymers with a large amount of comonomer were soluble in cyclohexane, allowing the manufacture of composite membranes with high permeance.

KW - Composite membranes

KW - Gas separation

KW - Oxygen enrichment

KW - Polyolefin membranes

KW - Syndiotactic polypropylene

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DO - 10.1016/j.memsci.2009.10.033

M3 - Article

AN - SCOPUS:72649090467

SN - 0376-7388

VL - 348

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EP - 40

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Syndiotactic polypropylene copolymer membranes and their performance for oxygen separation

Abstract

Keywords

ASJC Scopus subject areas

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