Gas permeability of mixed matrix membranes composed of poly(diphenylacetylene)s and dispersed metal chloride particles

Gas permeability of mixed matrix membranes composed of poly(diphenylacetylene)s and dispersed... In this study, the effect of the addition of metal particles on the gelation properties of poly[1-(3,4-dimethoxyphenyl)-2-(4-trimethylsilylphenyl)acetylene] [poly(DMOTMSDPA)] and poly[1-phenyl-2-(4-trimethylsilylphenyl)acetylene] [poly(TMSDPA)] was examined. The addition of TaCl5, NbCl5, and MoCl5 to poly(DMOTMSDPA) and poly(TMSDPA) solutions afforded gels. However, the addition of Ta(OCH3)5 and Mo(OCH3)5 did not induce gelation. Lewis acids such as TaCl5, NbCl5, and MoCl5 can coordinate with the π-electrons from the polyacetylene backbone and lone pair of the methoxy groups. Mixed matrix membranes (MMMs) composed of poly(DMOTMSDPA) and these metal chlorides were fabricated by varying the amount of metal chloride. The metal chloride particles were uniformly dispersed in poly(DMOTMSDPA) because the polymer chains could interact with the metal chloride particles. The oxygen permeability of the MMMs composed of poly(DMOTMSDPA) was greater than that of pure poly(DMOTMSDPA). With the addition of 20 mol% of TaCl5, the oxygen permeability increased. In addition, the gas permeability of poly(TMSDPA) was increased by the addition of TaCl5. On the other hand, the gas selectivity values of MMMs were 1.8–3.1, suggesting that MMMs do not contain non-selective defects such as pinholes and interfacial voids in the matrix. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Elsevier

Gas permeability of mixed matrix membranes composed of poly(diphenylacetylene)s and dispersed metal chloride particles

Loading next page...
 
/lp/elsevier/gas-permeability-of-mixed-matrix-membranes-composed-of-poly-3zs1rPIM1i
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0032-3861
D.O.I.
10.1016/j.polymer.2018.02.044
Publisher site
See Article on Publisher Site

Abstract

In this study, the effect of the addition of metal particles on the gelation properties of poly[1-(3,4-dimethoxyphenyl)-2-(4-trimethylsilylphenyl)acetylene] [poly(DMOTMSDPA)] and poly[1-phenyl-2-(4-trimethylsilylphenyl)acetylene] [poly(TMSDPA)] was examined. The addition of TaCl5, NbCl5, and MoCl5 to poly(DMOTMSDPA) and poly(TMSDPA) solutions afforded gels. However, the addition of Ta(OCH3)5 and Mo(OCH3)5 did not induce gelation. Lewis acids such as TaCl5, NbCl5, and MoCl5 can coordinate with the π-electrons from the polyacetylene backbone and lone pair of the methoxy groups. Mixed matrix membranes (MMMs) composed of poly(DMOTMSDPA) and these metal chlorides were fabricated by varying the amount of metal chloride. The metal chloride particles were uniformly dispersed in poly(DMOTMSDPA) because the polymer chains could interact with the metal chloride particles. The oxygen permeability of the MMMs composed of poly(DMOTMSDPA) was greater than that of pure poly(DMOTMSDPA). With the addition of 20 mol% of TaCl5, the oxygen permeability increased. In addition, the gas permeability of poly(TMSDPA) was increased by the addition of TaCl5. On the other hand, the gas selectivity values of MMMs were 1.8–3.1, suggesting that MMMs do not contain non-selective defects such as pinholes and interfacial voids in the matrix.

Journal

PolymerElsevier

Published: Mar 28, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off