Loading...
Search for:
a--nanocomposites
0.005 seconds
Studies on the oxygen barrier and mechanical properties of low density polyethylene/organoclay nanocomposite films in the presence of ethylene vinyl acetate copolymer as a new type of compatibilizer
, Article Materials and Design ; Volume 32, Issue 4 , 2011 , Pages 1806-1813 ; 02641275 (ISSN) ; Alemzadeh, I ; Reza Dadfar, S. M ; Vosoughi, M ; Sharif University of Technology
Abstract
Nanocomposite films based on low density polyethylene (LDPE), containing of 2, 3, and 4. wt.% organoclay (OC) and ethylene vinyl acetate (EVA) copolymer as a new compatibilizer were prepared and characterized using rheological tests, X-ray diffraction, differential scanning calorimetry, oxygen permeation measurements, and tensile tests. There was no exfoliation or intercalation of the clay layers in the absence of EVA, while an obvious increase in d-spacing was observed when the samples were prepared with EVA present. This issue was reflected in the properties of nanocomposites. The oxygen barrier properties of the LDPE/EVA/OC film were significantly better than those of the LDPE/OC film....
Morphology, rheology and mechanical properties of polypropylene/ethylene-octene copolymer/clay nanocomposites: Effects of the compatibilizer
, Article Composites Science and Technology ; Volume 72, Issue 14 , 2012 , Pages 1697-1704 ; 02663538 (ISSN) ; Fox, D ; Chen, Y ; Geever, L. M ; Khavandi, A ; Bagheri, R ; Higginbotham, C. L ; Zhang, H ; Chen, B ; Sharif University of Technology
Elsevier
2012
Abstract
The objective of this study was to investigate the effects of two compatibilizers, namely maleated polypropylene (PP-g-MA) and maleic anhydride grafted poly (ethylene-co-octene) (EOC-g-MA), on the morphology and thus properties of ternary nanocomposites of polypropylene (PP)/ethylene-octene copolymer (EOC)/clay nanocomposite. In this regard the nanocomposites and their neat polymer blend counterparts were processed twice using a twin screw extruder. X-ray diffraction, transmission electron microscopy, Energy dispersive X-ray spectroscopy, and scanning electron microscopy were utilized to characterize nanostructure and microstructure besides mechanical and rheological behaviors of the...