Aging: Degradation of Permeability in Microporous Polymeric Membranes

#46
Written By Dong-Yeun Koh

K. Kim, D.-Y. Koh*, Membrane Journal, vol.29, no.4, pp.191~201, (2019)

https://doi.org/10.14579/MEMBRANE_JOURNAL.2019.29.4.191

Before the commercialization of polymeric membranes applicable for industrial application, the homework remains for the high-performance polymers to overcome the practical challenge: long-term stability for prolonged service time. Polymers of intrinsic microporosity (PIMs), exhibiting exceptionally high fractional free volume and high permeability, are susceptible to physical aging where the extra volume created by the inefficient ladder-type packing will lead them from the volumetric equilibrium and reduce the free volume/permeability over time. Here, we will re-examine the physical aging of polymers of intrinsic microporosity, and discuss some of the most prominent attempts to mitigate physical aging in PIMs.

KK paper.png
Dong-Yeun Koh
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