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Morphology and properties of shape memory thermoplastic polyurethane composites incorporating graphene-montmorillonite hybrids

机译:掺入石墨烯 - 蒙脱石杂交物的形状记忆热塑性聚氨酯复合材料的形态与性质

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摘要

A novel hybrid containing graphene oxide (GO) and montmorillonite (MMT) was first synthesized by solution reaction. Then shape memory thermoplastic polyurethane (TPU) composites incorporating MMT-GO hybrid was fabricated via melt blending. Infrared spectra indicated that GO and MMT have been combined together through chemical hydrogen bonding. Tensile tests showed that MMT-GO hybrids provided substantially greater mechanical property enhancement than using MMT or GO as filler alone. With only 0.25 wt % loading of MMT-GO hybrid (the mass ratio of MMT:GO is 1:1), there was a relatively high improvement in tensile properties of TPU composites, compared with those of TPU/GO and TPU/MMT composites at the same filler content. Thermal analysis indicated that MMT-GO hybrids enhanced the thermal decomposition temperatures of TPU composites. Shape memory property tests showed that the shape fixing rate of TPU composites was effectively enhanced by incorporating MMT-GO hybrid. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46149.
机译:首先通过溶液反应合成一种新的含有石墨烯氧化物(GO)和蒙脱石(MMT)。然后通过熔融共混制造掺入MMT-GO杂种的形状记忆热塑性聚氨酯(TPU)复合材料。红外光谱表明,通过化学氢键合并了Go和MMT。拉伸试验表明,MMT-GO杂种提供的机械性能提高大于使用MMT或单独作为填料。只有0.25wt%的MMT-GO杂种(MMT的质量比为1:1),与TPU / GO和TPU / MMT复合材料相比,TPU复合材料的拉伸性质的提高相对高在相同的填充物含量。热分析表明MMT-GO杂种增强了TPU复合材料的热分解温度。形状记忆性能测试表明,通过结合MMT-GO杂种,有效地增强了TPU复合材料的形状固定速率。 (c)2017 Wiley期刊,Inc.J.Phill。聚合物。 SCI。 2018,135,46149。

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