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首页> 外文期刊>Journal of Materials Science >Transparent and flexible vermiculite-cellulose nanofiber composite membranes with high-temperature proton conduction
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Transparent and flexible vermiculite-cellulose nanofiber composite membranes with high-temperature proton conduction

机译：具有高温质子传导的透明和柔性蛭石 - 纤维素纳米纤维复合膜

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摘要

In this work, exfoliated vermiculite sheets readily formed transparent, flexible membranes having a layered microstructure by intercalation composite method with cellulose nanofibers. The resulting vermiculite-cellulose nanofiber (VMT-CNFs) composite membrane exhibited uniform interlayer spacing due to electrostatic interaction between the nanofibers and the vermiculite sheets. The proton conductivity of the composite membrane was enhanced compared to the pure cellulose nanofiber membrane. This was because the interlayer space in the composite membrane formed hydrophilic nanochannels for proton transport as the two components contain a large number of hydroxyl groups. In addition, due to the high-temperature decomposition resistance of vermiculite crystals, the thermal stability of composite membranes was significantly improved upon the addition of vermiculite sheets. The high-temperature proton conduction of VMT-CNFs composite membrane (100 degrees C, 0.043 Scm(-1)) was superior to that of the pure cellulose nanofiber membrane (100 degrees C, 0.024 Scm(-1)). Therefore, these composite membranes are suitable for proton conduction applications at high temperatures.
机译：在该工作中，剥落的蛭石片容易形成具有层状微观结构的透明，柔性膜，通过嵌入复合方法与纤维素纳米纤维。由所得的蛭石 - 纤维素纳米纤维（VMT-CNFS）复合膜由于纳米纤维和蛭石片之间的静电相互作用而显示出均匀的层间间距。与纯纤维素纳米纤维膜相比，复合膜的质子电导率提高。这是因为随着两个组分含有大量羟基，复合膜中的层间空间形成了用于质子传输的亲水纳米。另外，由于蛭石晶体的高温分解抗性，在添加蛭石片时，复合膜的热稳定性显着提高。 VMT-CNFS复合膜的高温质子传导（100℃，0.043 scm（-1））优于纯纤维素纳米纤维膜（100℃，0.024 scm（-1））。因此，这些复合膜适用于高温下的质子传导应用。

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  • 来源
    《Journal of Materials Science》 |2019年第7期|共8页
  • 作者

    Gu Xue; Li Bin; Li Fenglong; Zhang Kun; Guo Minghui;

  • 作者单位

    Northeast Forestry Univ Coll Mat Sci &

    Engn Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin 150040 Heilongjiang Peoples R China;

    Northeast Forestry Univ Coll Mat Sci &

    Engn Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin 150040 Heilongjiang Peoples R China;

    Northeast Forestry Univ Coll Mat Sci &

    Engn Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin 150040 Heilongjiang Peoples R China;

    Northeast Forestry Univ Coll Mat Sci &

    Engn Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin 150040 Heilongjiang Peoples R China;

    Northeast Forestry Univ Coll Mat Sci &

    Engn Minist Educ Key Lab Biobased Mat Sci &

    Technol Harbin 150040 Heilongjiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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