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首页> 外文期刊>Journal of Polymers and the Environment >Polylactide (PLA)-Halloysite Nanocomposites: Production, Morphology and Key-Properties
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Polylactide (PLA)-Halloysite Nanocomposites: Production, Morphology and Key-Properties

机译：聚乳酸（PLA）-钾盐纳米复合材料：生产，形态和关键性能

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摘要

To evaluate the potential of halloysite nano-tubes (HNT) as nanofiller for polylactide (PLA), various nanocomposites have been successfully produced by melt-blending the polyester matrix with HNT (HNT(QM)). HNT were also surface treated by silanization reaction with 3-(Trimethoxysilyl) propyl methacrylate (TMSPM). The morphology, thermal, tensile and impact strength properties of the nanocomposites containing 3-12 % HNT were evaluated and compared to those of pristine (unfilled) PLA. The nanocomposites were characterized by higher rigidity (with Young's modulus increasing with HNT loading), higher tensile strength (about 70 MPa at 6 % HNT(QM)), whereas the elongation at break and impact strength did not decrease. As demonstrated under dynamic solicitation (DMA), melt-blending PLA with HNT led to enhancement of storage modulus (E') and offers the possibility to use PLA in applications requiring higher temperatures of utilization. However, with few exceptions, TGA and DSC measurements did not reveal important changes of thermal parameters. The surface silanization treatment proved to improve the quality of the nanofiller dispersion even at higher loading. As a result, good thermal stability associated to high tensile strength, and noticeable increases in impact properties were recorded. Furthermore, enhanced nucleating ability and crystallization kinetics of the PLA matrix were revealed as specific characteristics.
机译：为了评估埃洛石纳米管（HNT）作为聚丙交酯（PLA）纳米填料的潜力，通过将聚酯基质与HNT（HNT（QM））熔融共混，已成功生产了各种纳米复合材料。还通过与甲基丙烯酸3-（三甲氧基甲硅烷基）丙酯（TMSPM）的硅烷化反应对HNT进行表面处理。评估了含有3-12％HNT的纳米复合材料的形态，热，拉伸和冲击强度性能，并将其与原始（未填充的）PLA进行了比较。纳米复合材料的特点是具有较高的刚度（杨氏模量随HNT的增加而增加），较高的拉伸强度（在6％HNT（QM）下约为70 MPa），而断裂伸长率和冲击强度并未降低。如在动态拉拔（DMA）下所展示的，具有HNT的熔融共混PLA导致储能模量（E'）的提高，并为在需要更高使用温度的应用中使用PLA提供了可能性。但是，除少数例外，TGA和DSC测量并未显示出热参数的重要变化。实践证明，表面硅烷化处理即使在更高的负载量下也可以提高纳米填料分散液的质量。结果，记录了与高拉伸强度相关的良好的热稳定性，以及冲击性能的显着提高。此外，PLA基质的成核能力和结晶动力学增强被揭示为特定特征。

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  • 来源
    《Journal of Polymers and the Environment》 |2012年第4期|932-943|共12页
  • 作者

    Marius Murariu; Anne-Laure Dechief; Yoann Paint; Sophie Peeterbroeck; Leila Bonnaud; Philippe Dubois;

  • 作者单位

    Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons and Materia Nova Research Center, Place du Parc 20, 7000 Mons, Belgium;

    Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons and Materia Nova Research Center, Place du Parc 20, 7000 Mons, Belgium;

    Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons and Materia Nova Research Center, Place du Parc 20, 7000 Mons, Belgium;

    Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons and Materia Nova Research Center, Place du Parc 20, 7000 Mons, Belgium;

    Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons and Materia Nova Research Center, Place du Parc 20, 7000 Mons, Belgium;

    Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons and Materia Nova Research Center, Place du Parc 20, 7000 Mons, Belgium;

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  • 正文语种 eng
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  • 关键词

    polylactide; halloysite nanotubes; nanocomposites; impact strength;

    机译：聚丙交酯埃洛石纳米管;纳米复合材料冲击强度;

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