ABSTRACT

Previous Chapters discuss the features of thermal and thermal oxidation transformations in highly heat resistant polymers. Polymers selected for the experiment were had "ideal" structure which contained no increments. Many experiments were performed on "model" samples, which were compounds with lower molecular mass, or oligomers. Such searching approach is required for understanding the degradation mechanism. However, under real conditions, there is no opportunity to obtain a polymer of either "ideal" structure or the above-mentioned purity. Therefore, to solve the applied tasks, the most important of which is stabilization, the investigators must base upon studies of degradation mechanisms, developed on appropriate models, and take into account "negative" contributions characterizing real polymeric structures. These are all reasons why this Chapter thoroughly discusses the effect of structure defects, end groups, MMD, organic and inorganic additives on thermal stability of polymers.