Synthesis of polyacrylonitrile by single‐electron transfer‐living radical polymerization using Fe(0) as catalyst and its adsorption properties after modification

Abstract

Fe(0) was firstly used as single‐electron transfer‐living radical polymerization catalyst for acrylonitrile polymerization using carbon tetrachloride as initiator, hexamethylenetetramine as N‐ligand, and N,N‐dimethylformamide as the solvent at 65 °C. First‐order kinetic studies indicated that this polymerization proceeded in a “living”/controlled manner. The living nature of the polymerization was also confirmed by chain extension of methyl methacrylate with polyacrylonitrile (PAN) as macroinitiator. Furthermore, PAN was modified with NH2OH·HCl to generate amidoxime groups for extraction of heavy metal ions (Hg2+) from aqueous solutions. Fourier transformed infrared spectroscopy was performed to characterize chemical composition and structure. The adsorption property of Hg2+ was investigated at different pH values of aqueous solutions and distilled water. The maximal saturated adsorption capacity of Hg2+ was 4.8 mmol g−1. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011

SET LRP of MMA mediated by Fe(0)/EDTA in the presence of air

“…Liu et al [39] firstly discussed SET LRP of acrylonitrile at 65°C by using Fe(0) as catalyst in the presence of hexamethylenetetramine as ligands and N,N-dimethylformamide as the solvents. The polymerization proceeded in a 'living' manner with CCl 4 as initiator.…”

Potential of Advanced Nano‐structured Membranes for Landfill Leachate Treatment: A Review

“…PAN with its neutral hydrophilic properties can absorb many metal ions and improve absorption materials. Polymers such as PAN‐containing amidoxime groups can be used for the treatment of metals due to its complex‐forming capabilities . Amirilargani et al fabricated hydrophilic PES UF membranes by blending PES and PAN in different ratios to achieve better fouling resistance.…”

SET‐LRP of acrylonitrile catalyzed by tin powder

“…Until now, SET‐LRP process is activated mostly by zero‐valent copper or copper derivatives. The first examples of using transition metal Fe(0),72 lanthanide metal Sm(0),73 and Yb(0)74 catalyzed SET‐LRP was provided by our group. In this work, Sn(0)‐mediated SET‐LRP of AN was attempted using hexamethylenetetramine (HMTA) as ligand, carbon tetrachloride (CCl 4 ) as initiator, and DMF as reaction medium.…”