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首页> 外文期刊>RSC Advances >Fully aromatic naphthalene-based sulfonated poly(arylene ether ketone)s with flexible sulfoalkyl groups as polymer electrolyte membranes
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Fully aromatic naphthalene-based sulfonated poly(arylene ether ketone)s with flexible sulfoalkyl groups as polymer electrolyte membranes

机译：基于芳族萘基的磺化聚（亚芳基醚酮），其具有柔性磺烷基作为聚合物电解质膜

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摘要

A series of sulfonated naphthalene-based poly (arylene ether ketone) s (SNPAEK-xx) with pendant sulfoalkyl groups were prepared by polycondensation of 1,5-bis(4-fluorobenzoyl)-2,6-dimethoxynaphthalene and omethylhydroquinone, followed by a demethylation and sulfobutylation reaction. The sulfonate degree of SNPAEK-xx could be controlled easily by adjusting the ratio of 1,4-butane sultone to the hydroxyl content in the demethylated polymers. Flexible and tough membranes with reasonably high mechanical strength were prepared. SNPAEK-xx membranes showed a high ionic exchange capacity (IEC) in the range of 1.13 to 2.27 mequiv. g(-1), and the highest proton conductivity of 0.191 S cm (-1) at 80 degrees C. They exhibited low methanol permeability in the range of 1.25-10.22 x 10 (7) cm(2) s (1), which was much lower than that of Nafion 117. Transmission electron microscopy analysis of SNPAEK-xx revealed that they had a more obvious phase separated structure between the hydrophilic side chain and hydrophobic fully aromatic domains at a higher IEC. Combining their high thermal and mechanical stability, high selectivity, lower water swelling ratio, SNPAEK-xx membranes could be promising materials as alternative to Nafion membranes for direct methanol fuel cell applications.
机译：通过1,5-双（4-氟苯苯甲酰基）-2,6-二甲氧基萘萘和om甲基醌的缩聚，将一系列具有侧磺酰烷基的磺化萘基聚（SnPaek-XX）具有侧链磺烷基，然后是A去甲基化和磺基化反应。通过将1,4-丁烷磺化龙酮与去甲基化聚合物中的羟基含量的比例调节至羟基含量，可以容易地控制SNPAEK-XX的磺酸盐。制备具有合理高机械强度的柔性和坚韧的膜。 SNPAEK-XX膜显示出高离子交换能力（IEC），范围为1.13至2.27 mequiv。 G（-1），以及80摄氏度的最高质子电导率为0.191秒（-1）。它们在1.25-10.22×10（7）cm（2）（1）的范围内显示出低甲醇渗透性，这远低于Nafion 117. SnPaek-XX的透射电子显微镜分析显示，它们在高级IEC中具有更明显的相位分离结构和疏水性完全芳族结构域之间。结合其高热和机械稳定性，高选择性，较低的水膨胀比，SNPAEK-XX膜可能是有前途的材料，作为用于直接甲醇燃料电池应用的Nafion膜的替代材料。

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  • 来源
    《RSC Advances》 |2015年第1期|共9页
  • 作者

    Wang Baolong; Cai Zhenzhen; Zhang Na; Zhang Bin; Qi Duo; Zhao Chengji; Na Hui;

  • 作者单位

    Jilin Univ Alan G MacDiarmid Inst Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130012 Peoples R China;

    Jilin Univ Alan G MacDiarmid Inst Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130012 Peoples R China;

    Jilin Univ Alan G MacDiarmid Inst Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Alan G MacDiarmid Inst Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ Alan G MacDiarmid Inst Coll Chem Changchun 130012 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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