Synthesis of exfoliated polystyrene/anionic clay MgAl-layered double hydroxide: structural and thermal properties

Exfoliated polystyrene/layered double hydroxide (PS/LDH) nanocomposites were prepared by direct intercalation of PS into MgAl LDH at 60 °C. The MgAl LDH as the nanofiller was modified via the precipitation of the salt mixture of magnesium and aluminum metals by sodium dodecyl sulfate (SDS). Various...

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Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (87), p.71441-71448
Main Authors: Alansi, Amani M., Alkayali, Waed Z., Al-qunaibit, Maha H., Qahtan, Talal F., Saleh, Tawfik A.
Format: Article
Language:English
Subjects:
Exfoliation
Hydroxides
Infrared spectroscopy
Magnesium
Nanocomposites
Polystyrene resins
Sodium dodecyl sulfate
Thermal stability
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Summary:Exfoliated polystyrene/layered double hydroxide (PS/LDH) nanocomposites were prepared by direct intercalation of PS into MgAl LDH at 60 °C. The MgAl LDH as the nanofiller was modified via the precipitation of the salt mixture of magnesium and aluminum metals by sodium dodecyl sulfate (SDS). Various techniques, Fourier Transformed Infrared Spectroscopy (FTIR), X-Ray-diffraction (XRD), Filed Emission Transmission Electron Microscopy (FETE) and thermo gravimetric analyses (TGA) were employed for structural properties and thermal stability of the nanocomposites. FTIR spectra indicated the presence of both functional groups of SDS–LDH and PS. XRD patterns and TEM images indicated the formation of amorphous dispersed and exfoliated nanocomposites. Increase in thermal stability with SDS–MgAl LDH content was observed by TGA and DTG through the T 0.5 ( T 0.5 the degradation temperature at 50%) and T max ( T max the maximum rate of change) with a maximum obtained for a loading of 2 and 4 wt%.
ISSN:2046-2069
2046-2069
DOI:10.1039/C5RA10545E