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首页> 外文期刊>RSC Advances >Nylon 6,6/graphene nanoplatelet composite films obtained from a new solvent
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Nylon 6,6/graphene nanoplatelet composite films obtained from a new solvent

机译：尼龙6,6 /石墨烯纳米纳薄复合薄膜从新的溶剂获得

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摘要

Solution processing of aliphatic polyamides (nylon) is quite challenging due to the fact that only a few solvents, such as formic acid and cresol, dissolve nylon. In general, polyamide 6,6 (nylon 6,6) is dissolved in formic acid to produce porous membranes or electrospun fibers. Herein, we propose for the first time a mixture of trifluoroacetic acid (TFA) and acetone that dissolves nylon 6,6, resulting in crystalline and non-porous films. Furthermore the same mixture of solvents was proved to be an excellent co-solvent for graphene nanoplatelets that were homogeneously dispersed in the solutions to produce reinforced nylon 6,6 polymer composites. The dispersion of the nanoplates in the polymer solution was found to be very stable over time. The mechanical and electrical properties of the developed composites were studied as a function of filler content. The Young's modulus of the nylon 6,6 films increases more than two times upon the addition of the nanoplates. Furthermore, the flexible composites exhibit semiconducting behavior, with their electrical conductivity reaching 10(-2) S cm(-1) for 20 wt% graphene nanoplatelet concentration.
机译：由于只有少数溶剂，例如甲酸和甲酚，溶解尼龙，溶于氧族聚酰胺（尼龙）的溶液加工是非常具有挑战性的。通常，聚酰胺6,6（尼龙6,6）溶解在甲酸中以产生多孔膜或电纺器纤维。在此，我们第一次提出三氟乙酸（TFA）和丙酮的混合物，其溶解尼龙6,6，导致结晶和无孔膜。此外，溶剂的混合物被证明是用于石墨烯纳米孔的优异共溶剂，其均匀地分散在溶液中以产生增强尼龙6,6聚合物复合材料。发现纳米板在聚合物溶液中的分散在时间上是非常稳定的。作为填料含量的函数研究了开发复合材料的机械和电性能。在加入纳米层后，尼龙6,6膜的杨氏模量增加了两倍以上。此外，柔性复合材料表现出半导体行为，其电导率达到10（-2）厘米（-1），用于20wt％石墨烯纳米纳薄浓度。

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  • 来源
    《RSC Advances》 |2016年第8期|共9页
  • 作者

    Papadopoulou Evie L.; Pignatelli Francesca; Marras Sergio; Marini Lara; Davis Alexander; Athanassiou Athanassia; Bayer Ilker S.;

  • 作者单位

    Ist Italiano Tecnol Smart Mat Via Morego 30 I-16163 Genoa Italy;

    Ist Italiano Tecnol Smart Mat Via Morego 30 I-16163 Genoa Italy;

    Ist Italiano Tecnol Nanochem Dept Via Morego 30 I-16163 Genoa Italy;

    Ist Italiano Tecnol Smart Mat Via Morego 30 I-16163 Genoa Italy;

    Ist Italiano Tecnol Smart Mat Via Morego 30 I-16163 Genoa Italy;

    Ist Italiano Tecnol Smart Mat Via Morego 30 I-16163 Genoa Italy;

    Ist Italiano Tecnol Smart Mat Via Morego 30 I-16163 Genoa Italy;

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  • 正文语种 eng
  • 中图分类 化学;
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