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首页> 外文期刊>RSC Advances >Developing highly conducting and mechanically durable styrene butadiene rubber composites with tailored microstructural properties by a green approach using ionic liquid modified MWCNTs
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Developing highly conducting and mechanically durable styrene butadiene rubber composites with tailored microstructural properties by a green approach using ionic liquid modified MWCNTs

机译：通过使用离子液体改性MWCNTS，通过绿色方法进行高度导电和机械耐用的苯乙烯丁二烯橡胶复合材料，采用绿色方法，通过绿色方法

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摘要

We report the effect of surface modification of multi-walled carbon nanotubes (MWCNTs) by an ionic liquid, 1-ethyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl). An apparent physical (cation-pi/pi-pi) interaction between the ionic liquid and MWCNTs was revealed by Raman and UV-visible spectroscopies. The composite loaded with 10 phr MWCNTs exhibits impressive enhancements in tensile strength (381% increase), hardness (34% increase), and abrasion resistance. High electrical conductivity was also achieved at MWCNT loading levels beyond 3 phr loading, with a low percolation threshold (0.023 vol%) for the composites. The microstructural development of conductive networks and uniform dispersion of MWCNTs in the presence of ionic liquid were analysed by TEM and AFM. The experimentally observed mechanical and electrical properties have been compared with theoretical predictions, and confirm that the dramatic improvement in mechanics and electrical conductivity is the outcome of the extremely fine dispersion, the strong secondary network of MWCNTs and improved interaction at the interface via thermodynamically-induced adsorption and physical interlocking of polymer chains in the nanoscopic MWCNT structure. This study demonstrates a simplified and eco-friendly approach to develop multifunctional advanced materials based on ionic liquid modified MWCNT elastomer composites with a much better balance among mechanical properties, conductivity and filler content.
机译：我们通过离子液体，1-乙基-2,3-二甲基咪唑鎓双（三氟甲基磺酰基）来报告多壁碳纳米管（MWCNT）的表面改性的影响。通过拉曼和UV可见光谱揭示了离子液体和MWCNT之间的表观物理（阳离子Pi / PI-PI）相互作用。装有10phr MWCNT的复合材料在拉伸强度（增加381％），硬度（增加34％）和耐磨性方面具有令人印象深刻的增强。在MWCNT加载水平之外，还可以在超过3phr加载的水平下实现高导电性，复合材料的低渗透阈值（0.023体积％）。通过TEM和AFM分析了在离子液体存在下MWCNTs在离子液体存在下进行导电网络和均匀分散的微观结构。已经将实验观察到的机械和电性能与理论预测进行了比较，并确认力学和电导率的显着改善是极其精细的分散，MWCNT的强度二级网络的结果，以及通过热力学诱导的界面的改进的相互作用纳米型MWCNT结构中聚合物链的吸附和物理互锁。本研究证明了一种简化和环保的方法，可基于离子液体改性的MWCNT弹性体复合材料开发多功能先进材料，在机械性能，电导率和填料含量之间具有更好的平衡。

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  • 来源
    《RSC Advances》 |2016年第39期|共12页
  • 作者

    Abraham Jiji; Arif Mohammed P.; Kailas Lekshmi; Kalarikkal Nandakumar; George Soney C.; Thomas Sabu;

  • 作者单位

    Mahatma Gandhi Univ Int &

    Inter Univ Ctr Nanosci &

    Nanotechnol PD Hills Kottayam 686560 Kerala India;

    Mahatma Gandhi Univ Int &

    Inter Univ Ctr Nanosci &

    Nanotechnol PD Hills Kottayam 686560 Kerala India;

    Univ Limerick Mat &

    Surface Sci Inst Limerick Ireland;

    Mahatma Gandhi Univ Int &

    Inter Univ Ctr Nanosci &

    Nanotechnol PD Hills Kottayam 686560 Kerala India;

    Amal Jyothi Coll Engn Ctr Nanosci &

    Nanotechnol Kottayam Kerala India;

    Mahatma Gandhi Univ Int &

    Inter Univ Ctr Nanosci &

    Nanotechnol PD Hills Kottayam 686560 Kerala India;

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