Authors Costa, F. R. ; Abdel-Goad, M. ; Wagenknecht, U. ; Heinrich, G.
Title Nanocomposites based on polyethylene and Mg-Al layered double hydroxide. I. Synthesis and characterization
Date 14.06.2005
Number 12481
Abstract Low density polyethylene (LDPE)/Mg-Al layered double hydroxide (LDH) nanocomposites have been synthesized with different compositions by melt-mixing technique using maleic anhydride grafted polyethylene as compatibilizer. LDH has been modified by sodium dodecylbenzene sulfonate using reconstruction method and characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The nanocomposites are characterized by different techniques such as, transmission electron microscopy (TEM), XRD and rheology. The TEM analysis shows a complex nature of particle dispersion in the polymer matrix with wide distribution of particles sizes and shapes. The rheological analysis showed significant changes in linear viscoelastic responses of the composites, even at very low concentration (2 phr) of LDH materials, in comparison to the pure polymer in low frequency regime in dynamic frequency sweep experiments. These changes are related to the LDHs-polymer chains interactions resulting in network-like structure. © 2005 Elsevier Ltd. All rights reserved.
Publisher Polymer
Citation Polymer 46 (2005) 4447-4453
Tags layered double hydroxide low density polyethylene nanocomposites mechanical-properties intercalation exfoliation rheology

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