Edwin P. Chan, Allison P. Young, Jung-Hyun Lee, Jun Young Chung and Christopher M. Stafford Swelling of ultrathin crosslinked polyamide water desalination membranes Journal of Polymer Science Part B: Polymer Physics 51
Ultrathin aromatic polyamide (PA) films represent state-of-the-art nanofiltration and reverse osmosis membrane materials for water desalination. In this work, the swelling of semiaromatic crosslinked PA ultrathin films is studied by measuring the constrained, one-dimensional film expansion upon exposure to water vapor. By applying a modified Flory–Rehner theory used to describe the swelling of a constrained polymer network, the film expansion is linked to the properties of the PA network including the Flory interaction parameter and the number of monomer units between crosslinks.
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