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Book of abstracts of the conference
Kovářová, Jana
The aim of the regular bilateral meetings of Czech and Slovak researchers in the field of macromolecular chemistry and physics is deepening of mutual awareness about current research projects and results not only of the academic character but also from the targeted and applied research.
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Thermoanalytical evaluation of the oxidative stability of liquid polybutadienes
Kovářová, Jana ; Podešva, Jiří
Hydroxy-terminated liquid polybutadienes, as commercially available polymeric diols, are used in teh production of special types of elastomeric polyurethanes. A comparison of the oxidation susceptibility in a series of hydroxy-terminated polybutadiene rubbers in relation to the degree of hydrogenation shows that the oxidative stability of liquid rubbers gradually increases with the decreasing content of double bonds in the 1-PB chains.
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Effect of storage conditions on ageing process of plastics
Kovářová, Jana ; Špaček, V. ; Řeháková, H.
Autooxidation, a chemical chain reaction, is an important part of various forms of degradation of most polymeric materials. During time and in relation to the particular conditions under which the polymers serve (temperature, air oxygen, sun irradiation, ozone, mechanical treatment, impurities etc.) undesirable and irreversible changes in their structure and useful properties take place.The necessity to use appropriate antioxidants and stabilizers for slowing down the degradation processes is mentioned.
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