Non-chlorinated polymer compositions based оn acrylonitrile butadiene rubber аnd styrene copolymer
Abstract
The paper features the research results on modification of acrylonitrile butadiene rubber with styrene-ethylene-butylene-styrene copolymer (locally manufactured SEBS thermoplastic elastomer) aiming at substitution of polyvinyl chloride component in polymer compositions based on the abovementioned rubber which are widely applied for manufacturing a broad range of rubber goods. The compositions are obtained by mixing acrylonitrile butadiene rubber of BNKS-40AMN grade with 5-20% wt of the defined styrene copolymer. Physical and chemical properties of both the initial polymers and compositions thereof have been studied with the use of Fourier-transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, and thermomechanical analysis. The results show that the two components of the polymer blends are characterized by good compatibility within the studied range of concentrations. Moreover, as opposed to the known composites based on the mixtures of rubber and polyvinyl chloride, the obtained compositions have an improved heat resistance and are supposed to produce no chlorine-containing toxic substances when using products derived from them. The latter is an additional benefit resulting in improved sustainability and environmental safety.
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