Gas transport properties of poly(arylene ether)s containing phthalimidine moiety in the main chain

作者：Ghosh Sipra; Bandyopadhyay Parthasarathi; Mohanty Aruna Kumar; Banerjee Susanta^*

来源：Separation and Purification Technology, 2013, 103: 222-229.

DOI：10.1016/j.seppur.2012.10.016

• Poly(arylene ether)s
• Phthalimidine moiety
• Gas permeability
• Structure-property correlationship

The gas permeabilities of CH4, N-2, O-2 and CO2 through a series of poly(arylene ether)s (PAEs) containing cardo phthalimidine unit in the main chain were measured at three different temperatures and fixed gas pressure of 3.5 bar. The polymers exhibited high permeabilities and moderate selectivities. Two of the polymers named PAE-II and PAE-III showed high permeability for all the gases (P-CO2 = 44.04, 40.06 Barrers, respectively). Moreover, high permeability coefficients for O-2 (P-O2 = 12.37-7.41) with good permselectivities towards O-2 and N-2 (8.14-6.92) made these series of poly(arylene ether)s highly interesting in comparison to the previously reported phthalimidine based polymers. The temperature dependence of permeability/diffusion coefficients enable to calculate the activation energies for the permeation/diffusion process of different gases through these membranes. An attempt has been taken to establish structure-property correlationship between the repeat unit structures and the gas transport properties of these polymers.

• 出版日期2013-1-15