Ai. Vilenskii et Gs. Zhdanov, CHEMICAL-CHANGES IN TRACK REGIONS OF POLY(ETHYLENE-TEREPHTHALATE) IRRADIATED WITH XENON IONS, High energy chemistry, 32(2), 1998, pp. 88-91
Products formed in tracks produced by bombarding poly(ethylene terepht
halate) with Xe ions are studied. It was found that the most profound
changes in the polymer occur in a track region of 15-20 nm radius. It
is this region in which the degradation of macromolecules is accompani
ed by branching and crosslinking: a gel is formed that retards the dif
fusion of hydroxyl groups into the reaction zone and the reaction prod
ucts out of it during etching. The effect of the ion on the polymer ex
tends to 50 nm. A model for track structure is proposed.