title: Hydrophobic-hydrophilic post-cross-linked polystyrene/poly (methyl acryloyl diethylenetriamine) interpenetrating polymer networks and its adsorption properties.
abstract: In this study, we developed an effective approach for increasing the equilibrium adsorption capacity of the interpenetrating polymer networks (IPNs) toward polar aromatic compounds. For this purpose, a novel post-cross-linked polystyrene/poly (methyl acryloyl diethylenetriamine) (CMPS_pc/PMADETA) IPNs was synthesized and its adsorption was evaluated from aqueous solution using p-hydroxybenzoic acid as the adsorbate. CMPS_pc/PMADETA IPNs possessed a relatively high Brunauer-Emmett-Teller (BET) surface area and hydrophobic networks as well as hydrophilic networks, inducing a much enhanced adsorption toward p-hydroxybenzoic acid. The equilibrium adsorption capacity of p-hydroxybenzoic acid on CMPS_pc/PMADETA IPNs was remarkably larger than that on its precursors and the equilibrium data were correlated better by Sips model than the Langmuir and Freundlich models. Furthermore, the adsorption was a fast process, and the micropore diffusion model characterized the kinetic data very well. At a feed concentration of 1060.8mg/L and a flow rate of 10.8BV/h, the dynamic adsorption capacity was calculated to be 200.8mg/mL wet resin.
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
authors.forename: Hebing
authors.initials: H
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Fu
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Yan
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China. Electronic address: jianhanhuang@csu.edu.cn.
authors.forename: Jianhan
authors.initials: J
authors.lastname: Huang
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China. Electronic address: liuyounian@csu.edu.cn.
authors.forename: You-Nian
authors.initials: YN
authors.lastname: Liu
authors.affiliation: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
authors.forename: Srećko I
authors.initials: SI
authors.lastname: Kirin
keywords: Adsorption; Interpenetrating polymer networks (IPNs); Post-cross-linked polystyrene; p-Hydroxybenzoic acid