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首页> 外文期刊>Journal of Applied Polymer Science >Styrene-butadiene-styrene copolymer compatibilized interfacial modified multiwalled carbon nanotubes with mechanical and piezoresistive properties
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Styrene-butadiene-styrene copolymer compatibilized interfacial modified multiwalled carbon nanotubes with mechanical and piezoresistive properties

机译：苯乙烯-丁二烯-苯乙烯共聚物相容的具有机械和压阻特性的界面改性多壁碳纳米管

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In this study, styrene-butadiene-styrene tri-block copolymer/multiwalled carbon nanotubes (SBS/MWNTs) were prepared by means of a solution blending method. To enhance the compatibility between SBS and MWNTs, the SBS grafted MWNTs (SBS-g-MWNTs) were used to replace MWNTs. The MWNTs were chemically hydroxylated by the dissolved KOH solution with ethanol as solvent and then reacted with 3-Aminopropyltriethoxysilane (APTES) to functionalize them with amino groups (MWNT-NH2). The SBS-g-MWNTs were finally obtained by the reaction of MWNT-NH2 and maleic anhydride grafted SBS (MAH-g-SBS). The SBS-g-MWNTs were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform-infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscope (SEM), and thermogravimetric analysis (TGA). The results showed that the SBS molecules were homogeneously bonded onto the surface of the MWNTs, leading to an improvement of the mechanical and electrical properties of SBS/SBS-g-MWNTs composites due to the excellent interfacial adhesion and dispersion of SBS-g-MWNTs in SBS. A series of continuous tests were carried out to explore the electrical-mechanical properties of the SBS/SBS-g-MWNTs composites. We found out that, near the percolation threshold, the well-dispersed SBS/SBS-g-MWNTs composites showed good piezoresistive characteristics and small mechanical destructions for the development of little deformation under vertical pressure. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42945.
机译：在这项研究中，通过溶液共混法制备了苯乙烯-丁二烯-苯乙烯三嵌段共聚物/多壁碳纳米管（SBS / MWNTs）。为了增强SBS与MWNT之间的兼容性，使用SBS接枝的MWNT（SBS-g-MWNT）替代了MWNT。通过用乙醇作为溶剂的溶解的KOH溶液将MWNTs化学羟基化，然后与3-氨丙基三乙氧基硅烷（APTES）反应，使其具有氨基官能团（MWNT-NH2）。最终通过MWNT-NH2与马来酸酐接枝的SBS（MAH-g-SBS）的反应获得了SBS-g-MWNT。通过X射线光电子能谱（XPS），傅立叶变换红外光谱（FT-IR），透射电子显微镜（TEM），扫描电子显微镜（SEM）和热重分析（TGA）对SBS-g-MWNT进行了表征。结果表明，由于SBS-g-MWNTs具有优异的界面附着力和分散性，SBS分子均匀地结合在MWNTs的表面，从而改善了SBS / SBS-g-MWNTs复合材料的机械和电气性能。在SBS中。进行了一系列连续测试，以探索SBS / SBS-g-MWNTs复合材料的电机械性能。我们发现，在渗流阈值附近，分散良好的SBS / SBS-g-MWNTs复合材料表现出良好的压阻特性和较小的机械破坏，在垂直压力下几乎没有变形。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，42945。

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