Polyolefins/MMT nanocomposites with exfoliated, intercalated and mixed morphology were prepared by melt blending EPM and LDPE containing a moderate amount (0.08÷1.8 by mol) of grafted diethylsuccinate or succinic anhydride groups. Material characterization by DSC, x-ray diffraction, TEM microscopy, FT-IR, dielectric spectroscopy and extraction with hot toluene allowed to demonstrate the existence of strong interactions at the polymer/MMT interface through the polar groups grafted to the polyolefin. Nanocomposite permeability to oxygen and water vapour was discussed with reference to the above mentioned interface interactions.
Experimental evidences of polymer confinement and its effect in gas barrier properties in polyolefins/MMT nanocomposites
Passaglia E;Conzatti L;
2007
Abstract
Polyolefins/MMT nanocomposites with exfoliated, intercalated and mixed morphology were prepared by melt blending EPM and LDPE containing a moderate amount (0.08÷1.8 by mol) of grafted diethylsuccinate or succinic anhydride groups. Material characterization by DSC, x-ray diffraction, TEM microscopy, FT-IR, dielectric spectroscopy and extraction with hot toluene allowed to demonstrate the existence of strong interactions at the polymer/MMT interface through the polar groups grafted to the polyolefin. Nanocomposite permeability to oxygen and water vapour was discussed with reference to the above mentioned interface interactions.| File | Dimensione | Formato | |
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