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首页> 外文期刊>Journal of Polymers and the Environment >Study of Thermo-Mechanical and Morphological Behaviour of Biodegradable PLA/PBAT/Layered Silicate Blend Nanocomposites
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Study of Thermo-Mechanical and Morphological Behaviour of Biodegradable PLA/PBAT/Layered Silicate Blend Nanocomposites

机译：可生物降解的PLA / PBAT /层状硅酸盐共混纳米复合材料的热力学和形态学行为研究

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摘要

Poly (lactic acid) (PLA) and poly (butylene adipate-co-terephthalate) (PBAT) blend nanocomposites were prepared using melt blending technique followed by compression moulding. The blend nanocomposites were prepared with a variation of PBAT loading along with maleic anhydride and benzoyl peroxide ranging from 5 to 20 wt% along with two different commercially available nanoclays cloisite 93A and cloisite 30B (C30B) at 3 wt% loading. The maleic anhydride and benzoyl peroxide were used during the melt blending of the blend nanocomposites as a compatibilizer and as an accelerator respectively. Maleic anhydride used to enhance the compatibility of the PLA/PBAT blend and as well as the uniform adhesion of the nanoclays with them. The properties and characterizations of PLA matrix and the PLA/PBAT blend nanocomposites have been studied. The tensile strength, % elongation and impact strength increased with the preparation of PLA/PBAT blend nanocomposites as compared with PLA matrix. PLA/PBAT/C30B blend nanocomposites exhibited optimum tensile strength at 15 wt% of PBAT loading. Differential scanning calorimetry and thermo-gravimetric analysis also showed improved thermal properties as compared with virgin PLA. The wide angle X-ray diffraction studies indicated an increase in d-spacing in PLA/PBAT/C30B blend nanocomposite thus revealing intercalated morphology.
机译：聚（乳酸）（PLA）和聚（己二酸丁二酯-对苯二甲酸对苯二甲酸酯）（PBAT）共混纳米复合材料的制备是采用熔融共混技术，然后进行压塑。制备掺合物纳米复合材料，其中PBAT负载量与马来酸酐和过氧化苯甲酰的变化范围为5至20wt％，以及两种不同的市售纳米粘土梭石93A和梭壳30B（C30B），负载为3wt％。在共混纳米复合材料的熔融共混期间，将马来酸酐和过氧化苯甲酰分别用作增容剂和促进剂。马来酸酐用于增强PLA / PBAT共混物的相容性以及纳米粘土与它们的均匀粘附。研究了PLA基质和PLA / PBAT共混纳米复合材料的性质和表征。与PLA基质相比，PLA / PBAT共混纳米复合材料的制备提高了拉伸强度，伸长率和冲击强度。 PLA / PBAT / C30B共混纳米复合材料在PBAT含量的15 wt％时显示出最佳的拉伸强度。与原始PLA相比，差示扫描量热法和热重分析法还显示出改善的热性能。广角X射线衍射研究表明PLA / PBAT / C30B共混纳米复合材料的d间距增加，从而揭示了插层的形态。

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  • 来源
    《Journal of Polymers and the Environment》 |2014年第3期|398-408|共11页
  • 作者

    Aswini Kumar Mohapatra; Smita Mohanty; S. K. Nayak;

  • 作者单位

    Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar 751024, Orissa, India;

    Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar 751024, Orissa, India;

    Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar 751024, Orissa, India;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    PLA; PBAT; Blend nanocomposites and WAXD;

    机译：解放军PBAT;混合纳米复合材料和WAXD;

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