Ionic liquid modified poly(2,6-dimethyl-1,4-phenylene oxide) for CO2 separation
Ionic liquid modified poly(2,6-dimethyl-1,4-phenylene oxide) for CO2 separation
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DOI：
10.1007/s10965-011-9761-9
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发表时间：
2012-02
影响因子：
2.8
通讯作者：
H. Cong;Bing Yu;Jian-guo Tang;X. Zhao
中科院分区：
文献类型：
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作者：
H. Cong;Bing Yu;Jian-guo Tang;X. Zhao
在聚(2，6-二甲基-1，4-苯氧基)(PPO)的甲基位置引入咪唑基、吡啶基和氨基离子液体基团，合成了离子液体改性聚(2，6-二甲基-1，4-苯氧基)(PPO)。用不同类型的离子液体改性聚苯醚(Ippo)制备了膜，并对膜中CO2和N2的透过性进行了表征。由于结构中含有亲CO_2的离子液体基团，IPPO的CO_2溶解度优于PPO，而CO_2在IPPO中的扩散系数与玻璃化转变温度成正比。研究了聚合物在IPPO中对CO2的吸附和解吸行为，结果表明，IPPO对CO2的吸附和解吸是完全可逆的，这使得聚合物有希望成为分离CO2的固体吸附材料。
Ionic liquid modified poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) was synthesized by introducing imidazolium-based, pyridinium-based, and ammonium-basd ionic liquid groups to the methyl position of PPO. Membranes were prepared from the different types of ionic liquid modified PPO (IPPO), and the permeability of CO2 and N2 in these membranes was characterized. For having the CO2-philic ionic liquid groups in the structure, the CO2 solubility of the IPPO is better than that of PPO, while the CO2 diffusivity in the IPPO is proportional to glass transition temperatures. The adsorption and desorption of CO2 in the IPPO were also investigated, and the results manifest that the adsorption and desorption of CO2 in IPPO are completely reversible, which makes the polymer promising as solid adsorbent materials for CO2 separation.