Immobilization of cationic polyelectrolyte on polystyrene spheres and adsorption for model whitewater contaminants

摘要: Polystyrene (PS) spheres with cationic polyelectrolyte brushes were prepared by reversible addition-fragmentation chain transfer polymerization (RAFT) from cross-linked PS spheres. These subsequently modified reaction chloroacetyl chloride and S,S-Bis(α,α’-dimethyl-α”-acetic acid) trithiocarbonate to serve as macro agents (macro-CTAs). Methacryloxyethyltrimethyl ammonium (MAC) was then grafted these macro-CTAs of obtain FT-IR, 13C-NMR, SEM, element analysis, TGA techniques applied investigate optimize the structure The loading 1.35 mmol/g poly-MAC used absorbents for removal polygalacturonic acid (PGA) sodium ligninsulfonate (lignin-Na). Adsorption capacity could reach 3 mg PGA/g 24 lignin-Na/g, respectively. Moreover, adsorption isotherm data PGA described Langmuir-Freundlich model, whereas lignin-Na conformed Langmuir model. Kinetic studies suggested that dissolved substances (PGA lignin-Na) diffuse into pores © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42509.