title: Tunable porosity and polarity of polar post-cross-linked resins and selective adsorption.
abstract: Herein we synthesized three polar post-cross-linked resins by adjusting the initial cross-linking degree of the precursor copolymers, and found that the porosity and polarity of these resins could be effectively tuned. The polar post-cross-linked resin with the initial cross-linking degree of 10% (abbreviated as PVE_10%_pc) possessed a much greater BET surface area and almost all micro/mesopores, but lower content of ester groups, while that with the initial cross-linking degree of 60% (named as PVE_60%_pc) had a much less BET surface area, less micro/mesopores and considerable macropores, but higher content of ester groups. The different porosity and polarity of these resins endowed them with different selectivity for the adsorption of aromatic compounds. PVE_10%_pc owned the largest equilibrium capacity to phenol whilst PVE_40%_pc was the most efficient for adsorption of benzoic acid, and hydrogen bonding, hydrophobic interaction and π-π stacking were the main driving forces for the adsorption.
authors: Department of Bioengineering and Environmental Science, Changsha University, Changsha 410003, China. Electronic address: wxm11@ccsu.edu.cn.
authors: Xiaomei
authors: X
authors: Wang
authors: College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
authors: Ting
authors: T
authors: Zhang
authors: College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
authors: Jiaqi
authors: J
authors: Huo
authors: College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. Electronic address: jianhanhuang@csu.edu.cn.
authors: Jianhan
authors: J
authors: Huang
authors: College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
authors: You-Nian
authors: YN
authors: Liu
keywords: Adsorption; Phenol; Polarity; Porosity; Post-cross-linked resin