Thermal and Morphological Properties of Polypropylene/Styrene-Butadiene-Styrene Nanocomposites

Polypropylene/styrene-butadiene-styrene fumed silica nanocomposites were mixed in a twin screw Brabender Plasticorder, the weight percent of the SBS was varied at (0, 5, 10, 20, and 40), and the fumed silica content was varied at (0, 0.05, 0.1, 0.5, 1, and 2) wt%. The thermal and morphological prope...

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Bibliographic Details
Published inPolymer-plastics technology and engineering Vol. 57; no. 15; pp. 1542 - 1553
Main Authors Mubarak, Y. A., Abu-Halimeh, R., Schubert, D.
Format Journal Article
LanguageEnglish
Published New York Taylor & Francis 13.10.2018
Taylor & Francis Ltd
Subjects
Butadiene
Chemical industry
Crystal structure
Crystallinity
Crystallization
Differential scanning calorimetry
Fumed silica
Heat measurement
Melt temperature
Melting
Morphology
Nanocomposites
Nanoparticles
Nucleation
Optical microscopy
Polarized light
Polypropylene
Silica
Silica fume
Silicon dioxide
Silicones
styrene-butadiene-styrene
Styrenes
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Summary:Polypropylene/styrene-butadiene-styrene fumed silica nanocomposites were mixed in a twin screw Brabender Plasticorder, the weight percent of the SBS was varied at (0, 5, 10, 20, and 40), and the fumed silica content was varied at (0, 0.05, 0.1, 0.5, 1, and 2) wt%. The thermal and morphological properties of these nanocomposites were studied using a differential scanning calorimetry and a polarized light microscopy. It has been found that the addition of styrene-butadiene-styrene or fumed silica nanoparticles alone to polypropylene did not change the melting temperature while the existence of both elements changed the melting temperature of polypropylene slightly. Also, increasing the percentage of fumed silica nanoparticles leads to an increase in the crystallization temperature while styrene-butadiene-styrene increment has no effect. The melting peaks obtained by the differential scanning calorimetry revealed that increasing the styrene-butadiene-styrene content reduces the percentage crystallinity as a result of increasing the amorphous portion. The addition of styrene-butadiene-styrene to polypropylene has a very slight effect on the relative percentage crystallinity when calculations are performed based on the quantity of polypropylene within the composite. Although fumed silica nanoparticles aided and accelerating the nucleation step but it could not increase the percentage crystallinity of polypropylene beyond the percentage crystallinity of neat polypropylene.
ISSN:0360-2559
1525-6111
DOI:10.1080/03602559.2017.1410840