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Effect of organoclay loading and electron beam irradiation on the physico-mechanical properties of low-density polyethylene/ethylene-vinyl acetate blend

Shojaei, A ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1002/pat.1770
  3. Publisher: 2011
  4. Abstract:
  5. The influence of electron beam (EB) irradiation and organoclay (OC) loading on the properties of low-density polyethylene (LDPE)/ethylene-vinyl acetate (EVA) blends was investigated. The samples were subjected to the EB irradiation with the dose values of 50 and 250kGy. X-ray diffraction (XRD), gel content, mechanical, thermal, and electrical properties were utilized to analyze the characteristics of the LDPE/EVA blends with and without OC at different irradiation dosages. Gel content analysis showed that the OC promotes considerably the insoluble part so that the LDPE/EVA blends filled with OC become fully crosslinked at 250kGy; possibly through the formation of further crosslinks between OC and polymer chains. The samples irradiated by EB showed enhanced mechanical properties due to the formation of three-dimensional networks. In addition, thermogravimetric analysis indicated that combined OC loading and radiation-induced crosslinking improved thermal stability of LDPE/EVA blends considerably
  6. Keywords:
  7. Low-density polyethylene ; Crosslinked ; Crosslinks ; EB irradiation ; Electron beam irradiation ; Ethylene-vinyl acetate ; Gel content analysis ; Gel contents ; Physicomechanical properties ; Polymer chains ; Radiation-induced crosslinking ; Three-dimensional networks ; Electric properties ; Electron beams ; Ethylene ; Gels ; Irradiation ; Loading ; Nanocomposites ; Organoclay ; Polyethylenes ; Thermodynamic stability ; Thermogravimetric analysis ; Thermoplastics ; Volatile fatty acids ; X ray diffraction ; X ray diffraction analysis ; Density (specific gravity)
  8. Source: Polymers for Advanced Technologies ; Volume 22, Issue 12 , 2011 , Pages 2352-2359 ; 10427147 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/pat.1770/abstract;jsessionid=4CCE1673FB7301718529C6E80481916F.f01t03