Abstract
The current trend is to use clay minerals as nanofillers in polymer blends. Kaolin is a hydrated aluminum silicate of a group of natural clays and it is one of the most important kaolin mineral fillers. The interactions between vulcanizing ingredients such a zinc oxide (ZnO), stearic acid (SA), CBS (N-cyclohexyl-2-benzothiazolesulfenamide), and sulfur (S) with kaolin (K) filler were studied in this work. We prepared systems of two and three components with kaolin at 1:1 ratio by mass, without rubber matrix. The second step was heating samples containing ZnO, SA, and CBS with kaolin at 140 °C. The interactions between vulcanizing components were investigated by thermal analysis (DTA, TG, and DSC), X-ray analysis, and Fourier transform infrared spectroscopy (FT-IR). Zinc stearate was formed in the presence of ZnO and SA as expected, which was confirmed by X-ray analysis.
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