Effect of different modified clays on the thermal and physical properties of polypropylene-montmorillonite nanocomposites

This paper studies the isothermal and nonisothermal crystallization of maleic anhydride grafted polypropylene-montmorillonite nanocomposites, compared to that of the polypropylene matrix (PP), by differential scanning calorimetry (DSC). The nanocomposites were prepared by melt-intercalation. The DSC...

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Bibliographic Details
Published in:Materials letters 2006-10, Vol.60 (23), p.2877-2880
Main Authors: Krump, H., Luyt, A.S., Hudec, I.
Format: Article
Language:English
Subjects:
Differential scanning calorimetry (DSC)
Enthalpy
Nanocomposites
Polymers
Surface energy
Thermal analysis
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Summary:This paper studies the isothermal and nonisothermal crystallization of maleic anhydride grafted polypropylene-montmorillonite nanocomposites, compared to that of the polypropylene matrix (PP), by differential scanning calorimetry (DSC). The nanocomposites were prepared by melt-intercalation. The DSC results show that the presence of modified montmorillonite (mMMT) clay results in a shift of the onset and peak temperatures towards higher values. This suggests that thicker lamellar crystals appear. Thermomechanical analysis (TMA) was used to monitor the changes in volume expansion of PP in the presence of mMMT sheets.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2006.02.006