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首页> 外文期刊>Journal of Applied Polymer Science >Nanomorphology and nanomechanical characteristics of solution-blow-spun PVDF-based fibers filled with carbon nanotubes
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Nanomorphology and nanomechanical characteristics of solution-blow-spun PVDF-based fibers filled with carbon nanotubes

机译：含有碳纳米管填充碳纳米管的溶液吹气PVDF纤维的纳米形态和纳米机械特性

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Fibers of poly(vinylidene fluoride) (PVDF) filled with multiwalled carbon nanotubes (MWCNTs) were prepared by solution blow spinning (SBS). The influence of the MWCNTs on the surface morphology and mechanical behavior of single fibers was studied. The morphology of the materials prepared and the dispersion of the MWCNTs within the polymer were studied by optical microscopy (OM) and transmission electron microscopy (TEM), while atomic force microscopy (AFM) was used to inspect the topography of single fibers and to perform nanoindentation tests. OM and TEM images indicated a good dispersion of the MWCNTs within the PVDF. AFM images evidenced clear changes in the topography of the blow-spun fibers when the MWCNTs were present in the polymer. A greater amount of MWCNTs in the PVDF led to more heterogeneous fiber surfaces. The nanoindentation force curves revealed that the stiffness was practically constant along the fibers, which indicated that the mechanical response was homogeneous and, in turn, an even distribution of the MWCNTs. The incorporation of the MWCNTs produced a mechanical reinforcement of the PVDF fibers, showing increases of 31% and 49% in the elastic modulus when 1% and 5% by weight of MWCNTs were added to the polymer, respectively. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47115.
机译：通过溶液吹纺（SBS）制备填充有多壁碳纳米管（MWCNT）的聚（偏二氟乙烯）（PVDF）的纤维。研究了MWCNT对单纤维的表面形态和力学行为的影响。通过光学显微镜（OM）和透射电子显微镜（TEM）研究了聚合物中制备的材料的形态和MWCNT的分散，而原子力显微镜（AFM）用于检查单纤维的形貌并进行纳米intentation测试。 OM和TEM图像指示PVDF内MWCNT的良好分散。当MWCNTS存在于聚合物中时，AFM图像证明了吹气纤维的形貌的明显变化。 PVDF中的更大量MWNTS导致更多的异质纤维表面。纳米狭窄力曲线显示沿纤维实际上恒定的刚度，这表明机械响应是均匀的，又均匀地分布MWCNT。 MWCNT的掺入产生了PVDF纤维的机械增强，当加入到聚合物中时，弹性模量的增加31％和49％。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47115。

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