Gas separation properties of triptycene-based polyimide membranes

Yoon Jin Cho, Ho Bum Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Tuning of free volume element distributions and sizes in polymers is technologically important because of various applications such as microelectronics (e.g., low dielectric materials), gas storage (e.g., organic adsorbents) and membrane-based gas separation technology (e.g., high permeable, selective polymers). Here we demonstrate that the polymer design via a three-dimensional rigid structure having internal void space can create a number of free volume elements in semi-rigid or rigid glassy polymers, which help improve fast, selective mass transport. To achieve it, we considered an iptycene-based monomer, i.e., triptycene, for polymer material design, as a result, leading to the formation of high fractional free volume with proper cavity size to separate small gas molecules with high selectivity as well as high permeability. Due to rigid structure of triptycene with tiny internal free volume elements, the resultant polyimides show high glass transition temperature of 352 °C and excellent thermal stability as well as solution processibility owing to good solubility in common organic solvents used in chemical industries. We believe that this kind of polymer design will provide keen insight on the development of processable polyimides having fine microporous structures on sub-nanometric scales for high performance glassy polymer applications.

Original languageEnglish
Title of host publicationModern Applications in Membrane Science and Technology
PublisherAmerican Chemical Society
Pages107-128
Number of pages22
ISBN (Print)9780841226180
DOIs
StatePublished - 2011 Jan 1

Publication series

NameACS Symposium Series
Volume1078
ISSN (Print)0097-6156
ISSN (Electronic)1947-5918

Fingerprint

Polyimides
Polymers
Gases
Membranes
Free volume
Rigid structures
Chemical industry
triptycene
Microelectronics
Organic solvents
Adsorbents
Thermodynamic stability
Mass transfer
Solubility
Tuning
Monomers
Molecules

Keywords

  • Free volume
  • Gas separation
  • Polyimide
  • Triptycene

Cite this

Cho, Y. J., & Park, H. B. (2011). Gas separation properties of triptycene-based polyimide membranes. In Modern Applications in Membrane Science and Technology (pp. 107-128). (ACS Symposium Series; Vol. 1078). American Chemical Society. https://doi.org/10.1021/bk-2011-1078.ch008
Cho, Yoon Jin ; Park, Ho Bum. / Gas separation properties of triptycene-based polyimide membranes. Modern Applications in Membrane Science and Technology. American Chemical Society, 2011. pp. 107-128 (ACS Symposium Series).
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Cho, YJ & Park, HB 2011, Gas separation properties of triptycene-based polyimide membranes. in Modern Applications in Membrane Science and Technology. ACS Symposium Series, vol. 1078, American Chemical Society, pp. 107-128. https://doi.org/10.1021/bk-2011-1078.ch008

Gas separation properties of triptycene-based polyimide membranes. / Cho, Yoon Jin; Park, Ho Bum.

Modern Applications in Membrane Science and Technology. American Chemical Society, 2011. p. 107-128 (ACS Symposium Series; Vol. 1078).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Cho YJ, Park HB. Gas separation properties of triptycene-based polyimide membranes. In Modern Applications in Membrane Science and Technology. American Chemical Society. 2011. p. 107-128. (ACS Symposium Series). https://doi.org/10.1021/bk-2011-1078.ch008