Fig. 1: Synthesis and characterization of PFPE-IEX and PFPE-IEX+ resins.
From: Fluoropolymer sorbent for efficient and selective capturing of per- and polyfluorinated compounds
a Chemical structure and synthetic scheme for PFPE-IEX+ sorbent. b 1H NMR spectrum and corresponding assignment of sPFPE in CDCl3. c Solid-state 13C NMR spectra and (d) FTIR spectra of PFPE-IEX and PFPE-IEX+ indicate the successful preparation of resins. e Morphology of PFPE-IEX+ acquired under SEM. f Schematic illustration of interactions between PFAS compounds with PFPE aggregate cluster and quaternary ammonium group within PFPE-IEX + .
