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RELATIONSHIP BETWEEN STRUCTURE AND RHEOLOGICAL BEHAVIOR OF THERMOPLASTIC VULCANIZATES CONTAINING RUBBER POWDER
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A comparative analysis of the structure and rheological behavior of thermoplastic vulcanizates based on polypropylene, ethylene-propylene-diene monomer and rubber powder was performed. Detailed structural studies of the compositions were carried out using atomic force microscopy. It was found that in mixtures containing rubber powder the polypropylene phase is enriched with carbon black particles with a diameter of about 100 nm. A study of the rheological behavior of thermoplastic vulcanizates showed an abnormal decrease in viscosity in mixtures containing up to 10 wt.% rubber powder. The critical parameters for the manifestation of this effect are: continuity of the PP matrix, nanoscale size of carbon black particles, their concentration and their uniform distribution in the PP matrix.
Title: RELATIONSHIP BETWEEN STRUCTURE AND RHEOLOGICAL BEHAVIOR OF THERMOPLASTIC VULCANIZATES CONTAINING RUBBER POWDER
Description:
A comparative analysis of the structure and rheological behavior of thermoplastic vulcanizates based on polypropylene, ethylene-propylene-diene monomer and rubber powder was performed.
Detailed structural studies of the compositions were carried out using atomic force microscopy.
It was found that in mixtures containing rubber powder the polypropylene phase is enriched with carbon black particles with a diameter of about 100 nm.
A study of the rheological behavior of thermoplastic vulcanizates showed an abnormal decrease in viscosity in mixtures containing up to 10 wt.
% rubber powder.
The critical parameters for the manifestation of this effect are: continuity of the PP matrix, nanoscale size of carbon black particles, their concentration and their uniform distribution in the PP matrix.
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