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Rheological and mechanical characteristics of low density polyethylene/ethylene-vinyl acetate/organoclay nanocomposites

Behradfar, A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1002/pen.21660
  3. Publisher: 2010
  4. Abstract:
  5. Attempts were made to trace the effect of organoclay (OC) on the rheological and mechanical behaviors of the low density polyethylene (LDPE)/ethylene-vinyl acetate (EVA) blends. To do this effectively, in addition to LDPE/EVA/OC system, pure LDPE and LDPE/EVA blends were also examined as model systems. The rheological behavior was determined by the capillary rheometer. Morphological characterization was also carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and theoretical approach based on interfacial energies. Shear viscosity, tensile strength and elastic modulus of LDPE/EVA were found to decrease by increasing the EVA content, while for LDPE/EVA/OC ternary nanocomposites, such properties showed an increase by increasing the content of EVA. Such behavior was explained by the morphological characteristic of the system in which OC was mainly intercalated/exfoliated in the EVA phase. This morphological characteristic was corroborated by the XRD, TEM and interfacial energies data. POLYM. ENG. SCI., 50:1315-1325, 2010
  6. Keywords:
  7. Capillary rheometer ; Ethylene-vinyl acetate ; Low density ; Mechanical behavior ; Mechanical characteristics ; Model system ; Morphological characteristic ; Morphological characterization ; Rheological behaviors ; SEM ; TEM ; Ternary nanocomposites ; Theoretical approach ; XRD , TEM ; Ethylene ; Interfacial energy ; Nanocomposites ; Phase interfaces ; Rheology ; Shear strength ; Tensile strength ; Transmission electron microscopy ; Viscosity ; X ray diffraction ; Scanning electron microscopy
  8. Source: Polymer Engineering and Science ; Volume 50, Issue 7 , March , 2010 , Pages 1315-1325 ; 00323888 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/pen.21660/abstract