STUDY an‎d THERMOGRAVIMETRIC ANALYSIS OF POLY N-4 AMINOSTYROL

The polyaminostyrol samples (PAS) and their copolymers with the styrol differing in position and quantity of amino-group, were obtained by polymerization of monomers on cyclogexan solution. The observed thermal effects were analysed by the differential thermal analysis combined with a thermo gravimetric analysis. It was found that the introduction of amino-groups into the polystyrols increased the temperature of total degradation of polymer from 150 till 260°C. The increase in thermo stability may be explained by the cohesion of macro molecules with the participation of amino-groups, which results in ammonium evolution, as well as in the decrease of valency area band of –NH2 grouping in the region 3370 – 3440 cm^-1. It was showed that the degree of cohesion formation and thermolysis rate depended on amino-group and their position into the cycle of benzene.