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首页> 外文期刊>Polymers >CO 2 -Philic Thin Film Composite Membranes: Synthesis and Characterization of PAN- r -PEGMA Copolymer
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CO 2 -Philic Thin Film Composite Membranes: Synthesis and Characterization of PAN- r -PEGMA Copolymer

机译：CO 2-酚醛薄膜复合膜：PAN-r-PEGMA共聚物的合成与表征

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In this work, we report the successful fabrication of CO 2 -philic polymer composite membranes using a polyacrylonitrile- r -poly(ethylene glycol) methyl ether methacrylate (PAN- r -PEGMA) copolymer. The series of PAN- r -PEGMA copolymers with various amounts of PEG content was synthesized by free radical polymerization in presence of AIBN initiator and the obtained copolymers were used for the fabrication of composite membranes. The synthesized copolymers show high molecular weights in the range of 44–56 kDa. We were able to fabricate thin film composite (TFC) membranes by dip coating procedure using PAN- r -PEGMA copolymers and the porous PAN support membrane. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were applied to analyze the surface morphology of the composite membranes. The microscopy analysis reveals the formation of the defect free skin selective layer of PAN- r -PEGMA copolymer over the porous PAN support membrane. Selective layer thickness of the composite membranes was in the range of 1.32–1.42 μm. The resulting composite membrane has CO 2 a permeance of 1.37 × 10 ?1 m 3 /m 2 ·h·bar and an ideal CO 2 /N 2 , selectivity of 65. The TFC membranes showed increasing ideal gas pair selectivities in the order CO 2 /N 2 > CO 2 /CH 4 > CO 2 /H 2 . In addition, the fabricated composite membranes were tested for long-term single gas permeation measurement and these membranes have remarkable stability, proving that they are good candidates for CO 2 separation.
机译：在这项工作中，我们报道了使用聚丙烯腈-r-聚（乙二醇）甲基醚甲基丙烯酸甲酯（PAN-r-PEGMA）共聚物成功制备了亲CO 2聚合物复合膜。在AIBN引发剂的存在下，通过自由基聚合反应合成了一系列PEG含量不同的PAN-r -PEGMA系列共聚物，并将所得共聚物用于制备复合膜。合成的共聚物显示出44–56 kDa的高分子量。我们能够使用PAN-r-PEGMA共聚物和多孔PAN支撑膜通过浸涂工艺制造薄膜复合材料（TFC）膜。应用扫描电子显微镜（SEM）和原子力显微镜（AFM）分析复合膜的表面形貌。显微镜分析揭示了在多孔PAN支持膜上形成PAN-r-PEGMA共聚物的无缺陷皮肤选择层。复合膜的选择层厚度在1.32–1.42μm的范围内。所得复合膜具有的渗透率为1.37×10？1 m 3 / m 2·h·bar的CO 2和理想的CO 2 / N 2选择性为65。TFC膜的理想气体对选择性按CO顺序增加2 / N 2> CO 2 / CH 4> CO 2 / H 2。此外，对制成的复合膜进行了长期单气体渗透性测试，这些膜具有出色的稳定性，证明它们是分离CO 2的良好选择。

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