Permeation properties to CO2 and N2 of poly(ethylene oxide)-containing and crosslinked polymer films

Hirayama, Yusuke; Kase, Yoji; Tanihara, Nozomu; Sumiyama, Yoshiyuki; Kusuki, Yoshihiro; Haraya, Kenji

doi:10.1016/s0376-7388(99)00080-0

Cited by 173 publications

(131 citation statements)

References 24 publications

Supporting

Mentioning

125

Contrasting

Order By: Relevance

“…It is known that poly(ethylene oxide) (PEO) compounds give excellent results for the CO 2 separation from other light gases due to the existence of favorable electronic interactions with the ether moiety [11][12][13]. In consequence, block-copolymers combining aromatic and PEO polyimides appear to be a successful route [14,15].…”

Section: Introductionmentioning

confidence: 99%

Advances in the design of co-poly(ether-imide) membranes for CO2 separations. Influence of aromatic rigidity on crystallinity, phase segregation and gas transport

Tena

Marcos‐Fernández

Viuda

et al. 2015

European Polymer Journal

View full text Add to dashboard Cite

SummaryIn our previous works, it was observed a clear relationship between the structure and the properties for different copoly(ether-imide)s, besides a good relation was found between SAXS characterization and permeability results. Here, a series of aliphatic aromatic copoly(ether-imide)s, based on an aromatic diamine (ODA), a diamine terminated poly(ethylene oxide) (PEO2000) of a molecular weight of 2000 g/mol and different aromatic dianhydrides (BPDA, BKDA (or BTDA) and PMDA )has been synthesized and characterized.The permeability for O2, N2, CO2 and CH4, increased with the rigidity of the monomers (BKDA < BPDA < PMDA), with the amount of PEO2000 in the copolymers, as well as with the increase in the temperature of treatment of the films. In this case, it was observed that when the proportion of PEO in the copolymer exceeded 50%, the permeability was similar for all samples, and the aromatic portion had no significant influence.Attending to glass transition temperature, Tg, of the aliphatic part, to its melting temperature, Tm, and to its crystallinity, segregation was better for more rigid dianhydrides at lower temperatures of treatment. Higher dianhydride rigidity produced better mechanical properties that were good but decreased a little bit when the percentage of PEO in the samples increased.Good permeselectivity compromises were attained for the CO2/N2 separation .This work gives light to design advanced materials for this separation with the increasing possibilities of controled structure and properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Advances in the design of co-poly(ether-imide) membranes for CO2 separations. Influence of aromatic rigidity on crystallinity, phase segregation and gas transport

Tena

Marcos‐Fernández

Viuda

et al. 2015

European Polymer Journal

View full text Add to dashboard Cite

show abstract

“…Fine tuning of polymer composition, adjustment of block length, or blending with low molecular poly(ethylene glycol)s allow significant increase of permeability without decrease in selectivity. [20][21][22][23] At least two TFC membranes based on PEG containing polymers have been examined in post-combustion CO 2 /N 2 pilot scale separation. Polaris™ of MTR (Menlo Park, USA) and Polyactive ™ TFC membrane of Helmholtz-Zentrum Geesthacht have been tested at power plants and showed stable results.…”

mentioning

confidence: 99%

Stability of blended polymeric materials for CO2 separation

Lillepärg

Georgopanos

Shishatskiy

2014

Journal of Membrane Science

View full text Add to dashboard Cite

Abstract:Blend materials of Pebax ® 1657 and low molecular weight poly(ethylene glycol)s were studied for their stability at temperature up to 90°C. It was found that a threshold of molecular weight exists at which leaching out of the low molecular weight compound from the polymer matrix becomes minimal. Poly(ethylene glycol) with methyl end groups having a molecular weight of 500 g/mol provides a blend material with a CO 2 permeability coefficient higher than in case of Polyactive™. PEBAX ® /DM500 blend can be a cheaper alternative to tailor made Polyactive™ in large scale production of thin film composite membrane.

show abstract

“…It is well established in the literature that the presence of polar groups in the polymer main chain favors CO 2 solubility. [21][22][23][24][25] The polar groups of the polymer are assumed to have dipolar interactions with the polarizable carbon dioxide molecules.…”

Section: Resultsmentioning

confidence: 99%

Tailoring of phase‐segregation structures in two‐soft‐segment urethane/urea polymer membranes

Queiroz¹,

Gonçalves

Pinho³

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

The synthesis of two-soft-segment urethane/ urea polymeric membranes with various proportions of the two soft segments, poly(propylene oxide) and polybutadiene, yielded very distinct morphologies depending on the degree of phase segregation. The morphologies were identified with transmission electron microscopy. With a low concentration of polybutadiene, this soft segment segregated into ellipsoidal microdomains dispersed in a poly(propylene oxide) matrix. With an intermediate concentration of polybutadiene, the morphology was characterized by nanoscale phase separation and could be described as a disordered, wormlike domain structure. With a high concentration of polybutadiene, a single phase was observed. This was attributed to molecular mixing of the two soft segments and was associated with membranes that under the application of a shear stress developed bands that efficiently scattered light. These bands were identified by field emission scanning electron microscopy with a periodicity of approximately 4-5 mm. The change in the membrane morphology from microscale phase segregation to nanoscale phase segregation led to very different membrane gas-permeation properties, that is, a reduction of the CO 2 permeability from 191 to 90 Barrer.

show abstract

Permeation properties to CO2 and N2 of poly(ethylene oxide)-containing and crosslinked polymer films

Cited by 173 publications

References 24 publications

Advances in the design of co-poly(ether-imide) membranes for CO2 separations. Influence of aromatic rigidity on crystallinity, phase segregation and gas transport

Advances in the design of co-poly(ether-imide) membranes for CO2 separations. Influence of aromatic rigidity on crystallinity, phase segregation and gas transport

Stability of blended polymeric materials for CO2 separation

Tailoring of phase‐segregation structures in two‐soft‐segment urethane/urea polymer membranes

Contact Info

Product

Resources

About