Gas permeability of carborane-containing polyamides


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Abstract

The gas permeation properties of two novel polyamides comprising m-carborane groups in the backbone have been first studied. The polymers have been synthesized by the polycondensation of m-carboranedicarboxylic acids and two diamines. It has been found that the synthesized polyamides exhibit unexpectedly low glass transition temperatures (140 and 173°C). For a number of light gases, permeability (P) and diffusion (D) coefficients have been measured and solubility coefficients as the S = P/D ratio have been determined. The parameters found have been compared with the P, D, and S values of other aromatic polyamides. It has been shown that according to these transport parameters, the novel polyamides are similar to many of the previously studied aromatic polyamides.

About the authors

Yu. P. Yampolskii

Topchiev Institute of Petrochemical Synthesis

Author for correspondence.
Email: Yampol@ips.ac.ru
Russian Federation, Moscow, 119991

S. A. Legkov

Topchiev Institute of Petrochemical Synthesis

Email: Yampol@ips.ac.ru
Russian Federation, Moscow, 119991

B. F. Shklyaruk

Topchiev Institute of Petrochemical Synthesis

Email: Yampol@ips.ac.ru
Russian Federation, Moscow, 119991

A. L. Rusanov

Nesmeyanov Institute of Organoelement Compounds

Email: Yampol@ips.ac.ru
Russian Federation, Moscow, 119991

V. I. Bregadze

Nesmeyanov Institute of Organoelement Compounds

Email: Yampol@ips.ac.ru
Russian Federation, Moscow, 119991

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