Duranoglu Dilek, Trochimczuk Andrzej W
Department of Chemical Engineering, Faculty of Chemistry and Metallurgy., Yildiz Technical University, 34210 Istanbul, Turkey.
Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology, 50-370 Wrocław, Poland.
Polymers (Basel). 2024 Sep 24;16(19):2688. doi: 10.3390/polym16192688.
A set of six porous copolymers of allyl methacrylate (AllMeth) and divinylbenzene (DVB), containing 5 to 50 wt% of the latter crosslinker, are synthesized by suspension polymerization method in the presence of inert diluents. Obtained polymers have various specific surface areas-those with 20 to 50 wt% of DVB have a high surface area in the range of 410-480 m/g, depending only slightly on the amount of the aromatic crosslinker. Specific surface area decreases strongly only when DVB content is 15 and 5 wt%. That is the feature that is unusual for crosslinked polymers and indicates the participation of allyl groups in making a novel polymeric network of high porosity. All polymers contain polar carbonyl groups, with an electron pair able to interact with polar sorbates. Polymers are characterized using elemental analysis, FTIR, and their porous structure is characterized by nitrogen adsorption at 77 K. All polymers contain residual allyl groups, which possibly can serve as convenient points for chemical modification, allowing for the future synthesis of specialty polymers (such as ion-exchangers and coordinating resins).
通过悬浮聚合法在惰性稀释剂存在下合成了一组六种甲基丙烯酸烯丙酯（AllMeth）和二乙烯基苯（DVB）的多孔共聚物，其中后者交联剂的含量为5至50 wt%。所得聚合物具有不同的比表面积——含20至50 wt% DVB的聚合物具有410 - 480 m²/g范围内的高比表面积，仅略微依赖于芳族交联剂的量。仅当DVB含量为15 wt%和5 wt%时，比表面积才会大幅下降。这是交联聚合物不寻常的特征，表明烯丙基参与形成了新型的高孔隙率聚合物网络。所有聚合物都含有极性羰基，其孤对电子能够与极性吸附质相互作用。使用元素分析、傅里叶变换红外光谱（FTIR）对聚合物进行表征，其多孔结构通过在77 K下的氮气吸附进行表征。所有聚合物都含有残留的烯丙基，这可能作为化学改性的便利位点，便于未来合成特种聚合物（如离子交换剂和配位树脂）。
