Behavior of Polytrimethylsilylpropyne-Based Composite Membranes in the Course of Continuous and Intermittent Gas Permeability Measurements

Autor:	A. O. Malakhov, D. S. Bakhtin, L. A. Kulikov, A.M. Grekhov, Alexey Volkov, S. D. Bazhenov, V. G. Polevaya
Rok vydání:	2021
Předmět:	chemistry.chemical_classification General Chemical Engineering Synthetic membrane Nanoparticle General Chemistry Polymer chemistry.chemical_compound Membrane chemistry Permeability (electromagnetism) Carbon dioxide Composite material Porosity Order of magnitude
Zdroj:	Russian Journal of Applied Chemistry. 94:616-623
ISSN:	1608-3296 1070-4272
Popis:	Two methods for monitoring the physical aging of polymer membranes by gas permeability measurements are compared. The traditional method with intermittent permeability monitoring is compared to the continuous permeability monitoring when the membrane occurs under excess pressure of the permeating gas throughout the experiment. A composite membrane with a thin (1 μm) selective polytrimethylsilylpropyne layer containing 10 wt % organic nanoparticles (porous aromatic frameworks) was taken as an example. The continuous permeability monitoring allows acceleration of the physical aging of the membrane and considerable (by two orders of magnitude) reduction of the experiment time. Fast physical aging in a carbon dioxide stream can be an efficient way to reach equilibrium gas permeability of membranes based on glassy polymers with high void volume.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::480e16bbfd68508eec3f1f822e852e14 https://doi.org/10.1134/s1070427221050098 Zobrazit plný text záznamu Full text from SpringerLink