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首页> 外文期刊>Advanced Functional Materials >Nanostructured Poly(styrene-b-butadiene-b-styrene) (SBS) Membranes for the Separation of Nitrogen from Natural Gas
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Nanostructured Poly(styrene-b-butadiene-b-styrene) (SBS) Membranes for the Separation of Nitrogen from Natural Gas

机译：用于分离天然气中氮气的纳米结构聚（苯乙烯-b-丁二烯-b-苯乙烯）（SBS）膜

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摘要

The preparation and characterization of new, tailor-made polymeric membranes using poly(styrene-b-butadiene-b-styrene) (SBS) triblock copolymers for gas separation are reported. Structural differences in the copolymer membranes, obtained by manipulation of the self-assembly of the block copolymers in solution, are characterized using atomic force microscopy,transmission electron microscopy, and the transport properties of three gases (CO_2, N_2, and CH_4). The CH_4/N_2 ideal selectivity of 7.2, the highest value ever reported for block copolymers, with CH_4 permeability of 41 Barrer, is obtained with a membrane containing the higher amount of poiybutadiene (79 wt%) and characterized by a hexagonal array of columnar polystyrene cylinders normal to the membrane surface. Membranes with such a high separation factor are able to ease the exploitation of natural gas with high N_2 content.The CO2/N2 ideal selectivity of 50, coupled with a CO_2 permeability of 289 Barrer, makes SBS a good candidate for the preparation of membranes for the post-combustion capture of carbon dioxide.
机译：报道了使用聚（苯乙烯-b-丁二烯-b-苯乙烯）（SBS）三嵌段共聚物进行气体分离的新型定制聚合物膜的制备和表征。通过操作溶液中嵌段共聚物的自组装获得的共聚物膜的结构差异，使用原子力显微镜，透射电子显微镜和三种气体（CO_2，N_2和CH_4）的传输特性来表征。 CH_4 / N_2的理想选择性为7.2，这是嵌段共聚物报道的最高值，CH_4的渗透率为41 Barrer，是通过含有更高含量的聚丁二烯（79重量％）的膜获得的，其特征是六角形的圆柱状聚苯乙烯阵列圆柱体垂直于膜表面。具有如此高分离系数的膜能够简化对高N_2含量天然气的开采.CO2 / N2理想选择性为50，再加上289 Barrer的CO_2渗透率，使SBS成为制备膜的理想选择燃烧后捕获二氧化碳。

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  • 来源
    《Advanced Functional Materials》 |2012年第8期|p.1759-1767|共9页
  • 作者

    Maria Giovanna Buonomenna; Giovanni Golem me; Caterina Maria Tone; Maria Penelope De Santo; Federica Ciuchi; Enrico Perrotta;

  • 作者单位

    Department of Chemical Engineering and Materials University of Calabria, and Consorzio INSTM Via P. Bucci, 87036 Rende, Italy;

    Department of Chemical Engineering and Materials University of Calabria, and Consorzio INSTM Via P. Bucci, 87036 Rende, Italy;

    IPCF-CNR UOS Cosenza, c/o Physics Department University of Calabria via P. Bucci, 87036 Rende, Italy;

    IPCF-CNR UOS Cosenza, c/o Physics Department University of Calabria via P. Bucci, 87036 Rende, Italy;

    IPCF-CNR UOS Cosenza, c/o Physics Department University of Calabria via P. Bucci, 87036 Rende, Italy;

    Department of Ecology University of Calabria Via P. Bucci 4A, 87036 Rende, Italy;

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