Positron Lifetimes and Crystallinity of γ-Irradiated Polypropylenes
The microstructure of the polypropylenes (PP) irradiated by gamma ray was studied by positron lifetime technique and differential scanning calorimetry (DSC). Lifetime measurement shows o-Ps intensity decreases with increasing γ irradiation dose. The crystallinity of irradiated samples was detected by DSC method. The correlation between o-Ps intensity and crystallinity indicates γ-ray can induce higher crystallinity in the polypropylene at low irradiation dose.
Jozef Krištiak, Jan Kuriplach and Pradeep K. Pujari
Z. Chen et al., "Positron Lifetimes and Crystallinity of γ-Irradiated Polypropylenes", Materials Science Forum, Vol. 733, pp. 163-166, 2013