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Journal of Materials Science
Erschienen in: Journal of Materials Science 2/2016

15.10.2015 | Original Paper

Morphology and properties of polypropylene/nano-CaCO3 composites prepared by supercritical carbon dioxide-assisted extrusion

verfasst von: Shihong Chen, Xiangdong Wang, Xiuqing Ma, Kuisheng Wang

Erschienen in: Journal of Materials Science | Ausgabe 2/2016

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Abstract

Polypropylene (PP)/calcium carbonate nanoparticles (nano-CaCO3) composites were prepared using a two-stage modular extruder with the assistance of supercritical carbon dioxide (sc-CO2). The crystallization and melting behavior, crystal forms, and crystal morphology were investigated by differential scanning calorimetry, wide-angle X-ray diffraction, and polarized optical microscopy. The loading of sc-CO2 injected into the extruder was optimized to be 2.0 phr. At this optimized loading, nano-CaCO3 particles were homogeneously dispersed in PP matrix. The addition of nano-CaCO3 particles has little impact on the melting behavior of PP, but exerts significant influence on the crystalline morphology of PP/nano-CaCO3 composites. At the optimized loading of sc-CO2, the PP/nano-CaCO3 composite has the highest impact strength due to the best dispersion of nano-CaCO3 particles in the PP matrix.
Vorheriger Artikel Quantification of sigma-phase evolution in thermally aged 2205 duplex stainless steel
Nächster Artikel Control of porous structure in flexible silicone aerogels produced from methyltrimethoxysilane (MTMS): the effect of precursor concentration in sol–gel solutions

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Metadaten
Titel
Morphology and properties of polypropylene/nano-CaCO3 composites prepared by supercritical carbon dioxide-assisted extrusion
verfasst von
Shihong Chen
Xiangdong Wang
Xiuqing Ma
Kuisheng Wang
Publikationsdatum
15.10.2015
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 2/2016
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-015-9272-x

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