Electron beam-initiated irradiation crosslinking

The increase in the modulus for Bis A PSF and Hq/Bp PSF with irradiation indicated that crosslinking predominated for both polymers and that the crosslink structures were probably basically similar. Hq/Bp(50) PSF was considerably more radiation resistant than Bis-A PSF, as shown by the rate of decrease in the elongation at failure. For both polymers, there was an initial rapid decrease in the elongation at failure followed by a slower decrease. This effect was also demonstrated by the variation in the fracture toughness (KI(.) with irradiation for Bis-A PSF. This work with cobalt-60 gamma radiation complements earlier studies of these materials using high dose rate electron beam irradiation (6). 

Kawaguchi, Y Yasuda, H. Synthesis of monodisperse poly(butyl acrylate) initiated by SmMe(C5Me5)2(THF) and its adhesive properties after crosslinking by electron-beam irradiation. J. Appl. Polym. Sci. 2001, 80, 432 37. 

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