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Effect of PEG on PLA/PEG blend and its nanocomposites: A study of thermo-mechanical and morphological characterization

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

Polymer composites, 2014-02, Vol.35 (2), p.283-293 [Periódico revisado por pares]

Hoboken, NJ: Blackwell Publishing Ltd

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  • Título:
    Effect of PEG on PLA/PEG blend and its nanocomposites: A study of thermo-mechanical and morphological characterization
  • Autor: Mohapatra, Aswini Kumar ; Mohanty, S. ; Nayak, S.K.
  • Assuntos: Applied sciences ; Blends ; Composites ; Differential scanning calorimetry ; Diffraction ; Exact sciences and technology ; Forms of application and semi-finished materials ; Mechanical analysis ; Nanocomposites ; Polymer industry, paints, wood ; Scanning electron microscopy ; Technology of polymers ; Tensile strength ; Thermogravimetric analysis
  • É parte de: Polymer composites, 2014-02, Vol.35 (2), p.283-293
  • Notas: ArticleID:PC22660
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    ObjectType-Article-2
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    content type line 23
  • Descrição: In this study, the effect of poly(ethylene glycol) (PEG) on the preparation of Poly(lactic acid) (PLA)/PEG blend and its nanocomposites by melt intercalation method were investigated. The PEG having molecular weight of 6,000 g/mol used with various concentrations (0, 10, 15, 20, 25, 30 wt%) in the preparation of PLA/PEG blend. Again, two types of commercialized organoclay [cloisite 93A (C93A) and cloisite 30B (C30B)] were used for the preparation of blend nanocomposites. With the incorporation of PEG into PLA the tensile strength and modulus decreases, whereas the percentage elongation and impact strength increases predominantly. Further, the PLA/PEG blend nanocomposites showed improved tensile strength and modulus with the addition of oraganoclays into the blend. Scanning electron microscopy (SEM) reveals the surface and miscibility study of the PLA/PEG blend. The effect of clay interaction in the PLA/PEG blend nanocomposites were also studied by using wide angle X‐ray diffraction (WAXD) and transmission electron microscopy (TEM). Dynamic mechanical analysis (DMA) was used to investigate the viscoelastic behavior of the blends and its nanocomposites. Differential scanning calorimetry (DSC) study reveals decreased glass transition temperature in case of PLA/PEG blend. The thermal stability of the blend and its nanocomposites were being studied by using thermogravimetric analysis (TGA). POLYM. COMPOS., 35:283–293, 2014. © 2013 Society of Plastics Engineers
  • Editor: Hoboken, NJ: Blackwell Publishing Ltd
  • Idioma: Inglês
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