Tunable porosity and polarity of polar post-cross-linked resins and selective adsorption

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• 作者：Xiaomei Wang^a ; ^{wxm11@ccsu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Ting Zhang^b ; Jiaqi Huo^b ; Jianhan Huang^b ; ^{jianhanhuang@csu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; You-Nian Liu^b
• 关键词：Post-cross-linked resin ; Porosity ; Polarity ; Adsorption ; Phenol
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：487
• 期：Complete
• 页码：231-238
• 全文大小：1469 K

文摘

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.