比表面积高、极性可控的极性修饰悬挂双键后交联吸附树脂的合成、结构与性能

This project plans to study the synthesis, structure and property of polar post-crosslinked polymeric adsorbents with high Brunauer-Emmet-Teller (BET) surface area and controllable polarity. For this purpose, we firstly introduce non-polar triene monomer like 1, 2, 4-trivinylbenzene and medium polar diene or triene monomer like glycerol trimethylacrylate in the suspension polymerization to increase the contents of pendent double bonds of the copolymers and to improve the hydrophility of the copolymers. Subsequently, the copolymers are post-crosslinked and polar post-crosslinked polymeric adsorbents are prepared accordingly. The relationships between the structures such as the chemical structure, pore structure together with the microstructure and the properties such as the swollen property together with the adsorption property of the copolymers as well as the polar post-crosslinked polymeric adsorbents are investiagted in detail and the effect of the synthetic conditions on the structures and the properties of the copolymers and the polar post-crosslinked polymeric adsorbents are clarified. We hope to find the key factors influencing the contents of pendent double bonds and the BET surface area of the copolymers as well as the BET surface area and the polarity of the polar post-crosslinked polymeric adsorbents so that we can establish the synthetic method for the polar post-crosslinked polymeric adsorbents with high BET surface area and controllable polarity. In particular, we will expound the adsorption mechanism between the polar post-crosslinked polymeric adsorbents and some typical organic small molecules such as phenol, salicylic acid and 2-naphthol. We also plan to separate some typical organic small molecules with differen molecular polarity completely from aqueous solution by the title polymeric adsorbents. This project will provide theory basis for novel adsorption and separation materials and it will also offer some ideas for post-crosslinked polymeric adsorbents. These polar post-crosslinked polymeric adsorbents can be applied in the fields of industrial wastewater treatment and purification of the active components of natural products.

针对悬挂双键后交联吸附树脂悬挂双键含量低、疏水性强等问题，本项目拟在聚合中引入三烯单体(如：1,2,4-三乙烯苯)和中等极性二烯或三烯单体(如：三甲基丙烯酸甘油酯)，提高共聚物的悬挂双键含量并改善其骨架的亲水性；进一步用后交联反应将共聚物的悬挂双键再交联，并调控某些关键因素，制备极性修饰悬挂双键后交联吸附树脂。探索共聚物和后交联树脂的化学结构、孔结构、微观结构等与溶胀性能、吸附性能等之间的关系规律，阐明共聚物的合成条件以及后交联反应对后交联树脂的结构与性能的影响，找到影响悬挂双键含量、比表面积和极性的关键因素，建立合成比表面积高、极性可控的极性修饰悬挂双键后交联吸附树脂的方法。进而明确其对有机小分子的吸附机理，实现极性不同的小分子的选择性分离，为基于后交联树脂的新型吸附分离材料的研究提供理论依据，为后交联树脂的发展提供思路，并期望在有机化工废水的治理、天然产物的分离纯化等领域得到应用。

本项目在聚合中引入双烯单体、三烯单体以及中等极性单体，通过Friedel-Crafts反应和后续的化学修饰，制备极性修饰悬挂双键后交联吸附树脂。探索后交联树脂的化学结构、孔结构、微观结构等与溶胀性能、吸附性能等之间的关系规律，阐明共聚物的合成条件以及后交联反应对后交联树脂的结构与性能的影响，建立合成比表面积高、极性可控的极性修饰悬挂双键后交联吸附树脂的方法。进而明确其对有机小分子的吸附机理，实现极性不同的小分子的选择性分离。