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The irradiation stability of polystyrene (PS) was studied by I3C and ’H NMR spectra, Nuclear Overhauser Relaxation (NOE) and I3C NMR spin-lattice relaxation time (T1). The results indicate that I3C and 1H NMR chemical shifts, NOE and T1 were almost invariant with the increase of irradiation dose. This shows that polystyrene is particularly stable within 2.5 kGy doses and the mechanism of its stability is discussed.
The irradiation stability of polystyrene (PS) was studied by I3C and ’H NMR spectra, Nuclear Overhauser Relaxation (NOE) and I3C NMR spin-lattice relaxation time (T1). The results indicate that I3C and 1H NMR chemical shifts, NOE and T1 were almost invariant with the increase of irradiation dose. This shows that the polystyrene is particularly stable within 2.5 kGy doses and the mechanism of its stability is discussed.