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  • 1 Slovak Academy of Sciences Polymer Institute 842 36 Bratislava Slovak Republic 842 36 Bratislava Slovak Republic
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Abstract  

The effect of addition of silica on the parameters of isothermal crystallization of polypropylene has been investigated. It was found that the covering of the silica surface by a layer of low-density polyethylene leads to a deactivation of the filler regarding the positive effect on the polypropylene crystallization rate parameters. Cross-linking of the surface polyethylene layer results in a stronger attachment of the modifying polymer to the filler surface and the deactivation effect of the silica surface modification is more pronounced.

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