ABSTRACT
46 Structural changes of polyphenylene oxide in the process of thermal treatment and friction were studied by mass spectrometric method. It was shown that under the terms of treatment at 300°C, destructive structuring processes take place in a polymer. Besides, Friss regrouping takes place that leads to branching of macromolecules and forms gel fraction. Investigation of tribochemical processes during friction showed that character of tribochemical processes in a polymer is conditioned by the formation of complex structure of pressed specimens containing branching, crosslinked polymer, and low molecular fraction as a result of friction at the border of friction surface.
