Pyrolysis mass-spectrometry (PMS) has been employed to investigate the process of thermal destruction of the secondary polyethylene (SPE), which was modified using hexamethylenetetramine (HMTA). The introduction of powdered HMTA in the polymer matrix on the basis of SPE, with a view to its mechano-chemical modification, leads to structural changes in the polymer matrix, to the formation of cross chemical bonds between macromolecules in SPE with the participation of the ionic fragments of the collapse of HMTA, and to high content of gel-fraction of compositions with increasing of HMTA content in them.
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