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Hyper-Cross-Linked Polymers for the Capture of Aromatic Volatile Compounds
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-01-03 , DOI: 10.1021/acsapm.9b01000 G. Paul 1 , F. Begni 1 , A. Melicchio 2 , G. Golemme 2 , C. Bisio 1, 3 , D. Marchi 1 , M. Cossi 1 , L. Marchese 1 , G. Gatti 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-01-03 , DOI: 10.1021/acsapm.9b01000 G. Paul 1 , F. Begni 1 , A. Melicchio 2 , G. Golemme 2 , C. Bisio 1, 3 , D. Marchi 1 , M. Cossi 1 , L. Marchese 1 , G. Gatti 1
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Hyper-cross-linked porous polymers (HCPs) are proposed as sorbents for the removal of aromatic volatile pollutants by using toluene as a representative of the BTX family. The hierarchical (micro and meso) porous architecture of the HCPs has been established by N2 physisorption at 77 K while the toluene adsorption capacities were determined by volumetric adsorption at 308 K. The HCPs display very high toluene uptakes, reaching adsorption capacities as high as 154% in weight for the polymer obtained with a tetraphenylmethane (TPM) and a formaldehyde dimethyl acetal (FDA) ratio of 1/16, whereas only very low uptakes were observed for aliphatic molecules such as n-hexane. HCP materials experience swelling effects evaluated by comparing the volume assessed via N2 physisorption with the volume occupied by toluene molecules in volumetric adsorption experiments. A multispectroscopic approach involving FT-IR and solid-state NMR techniques gave direct proof of the close spatial proximity between the polymeric host framework and guest BTX molecules. Solid-state 1H and 13C NMR spectroscopies have unambiguously identified the presence of CH/π interactions between the guest molecules and the porous framework of the hyper-cross-linked polymers.
中文翻译：
超交联聚合物，用于捕获芳香族挥发性化合物
提出使用超交联多孔聚合物（HCP）作为吸附剂，通过使用甲苯作为BTX系列的代表来去除芳香族挥发性污染物。HCP的分层（微和中观）多孔结构是通过在77 K下进行N 2物理吸附而建立的，而甲苯的吸附能力是通过在308 K下的体积吸附来确定的。HCP显示出非常高的甲苯吸收量，达到了高达63的吸附能力。在重量与四苯基（TPM）中得到的聚合物和甲醛的1/16二甲基乙缩醛（FDA）比154％，而被观察到的脂肪族分子如只有非常低的摄取ñ正己烷。通过比较通过N 2评估的体积，可以评估HCP材料的膨胀效果体积吸附实验中甲苯分子所占体积的物理吸附。涉及FT-IR和固态NMR技术的多光谱方法直接证明了聚合物主体骨架与客体BTX分子之间的空间接近性。固态1 H和13 C NMR光谱学已明确确定了客体分子与超交联聚合物的多孔骨架之间存在CH /π相互作用。
更新日期：2020-01-04
中文翻译：
超交联聚合物，用于捕获芳香族挥发性化合物
提出使用超交联多孔聚合物（HCP）作为吸附剂，通过使用甲苯作为BTX系列的代表来去除芳香族挥发性污染物。HCP的分层（微和中观）多孔结构是通过在77 K下进行N 2物理吸附而建立的，而甲苯的吸附能力是通过在308 K下的体积吸附来确定的。HCP显示出非常高的甲苯吸收量，达到了高达63的吸附能力。在重量与四苯基（TPM）中得到的聚合物和甲醛的1/16二甲基乙缩醛（FDA）比154％，而被观察到的脂肪族分子如只有非常低的摄取ñ正己烷。通过比较通过N 2评估的体积，可以评估HCP材料的膨胀效果体积吸附实验中甲苯分子所占体积的物理吸附。涉及FT-IR和固态NMR技术的多光谱方法直接证明了聚合物主体骨架与客体BTX分子之间的空间接近性。固态1 H和13 C NMR光谱学已明确确定了客体分子与超交联聚合物的多孔骨架之间存在CH /π相互作用。
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