Key Engineering Materials Vol. 559

Abstract: To decrease the combustibility of polyurethanes based on tall oil fatty acids ester, additives of five different halogen- and phosphorus-containing flame retardants were used. The efficiency of the flame retardants was evaluated from the change in the thermal, mechanical and combustibility characteristics of the obtained polyurethanes. It has been found that the phosphorus-containing flame retardant Levagard 4090 N decreases the combustibility of polyurethane to the greatest extent.

Abstract: Polymer films of poly(3,4-ethylenedithiothiophene) obtained by electrochemical oxidative polymerisation of the corresponding monomer have been investigated. p-Doping process of the polymer was characterized by in situ EPR spectroelectrochemisty. Compared to its close relative – PEDOT, the polymer features two distinct voltammetric peaks. The results of our studies indicate that both represent faradaic processes and that each manifests generation of charge carriers in the polymer.