Jing WANG, Manli LU, Rongfang SHEN, Mouhua WANG, Zhijie HU, Wenli ZHANG. Evolution of free radicals in ultra-high molecular weight polyethylene irradiated by an electron beam during accelerated aging process[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(2): 020201
Journals >Journal of Radiation Research and Radiation Processing >Volume 42 >Issue 2 >Page 020201 > Article
- Journal of Radiation Research and Radiation Processing
- Vol. 42, Issue 2, 020201 (2024)
Fig. 1. Experimental process for accelerated aging process of UHMWPE
![Typical spectra of several free radicals[30-31]; ×3/5/6 means magnifying by 3/5/6 times](/richHtml/fsxb/2024/42/2/020201/img_02.jpg)
Fig. 3. Evolution of radiation-induced UHMWPE radicals in air at 25 °C over time: (a) radical concentration as a function of time; (b) EPR curves of the sample in air; (c) EPR curves of the sample in nitrogen; ×5/10 means magnifying by 5/10 times
Fig. 4. Changes in free radical concentration, EPR spectra of samples A28 and N28 during accelerated aging process:(a) radical concentration as a function of time; (b) EPR curves for A28; (c) EPR curves for N28; ×5/50 means magnifying by 5/50 times
Fig. 5. Changes in free radical concentration and EPR spectra of UHMWPE with absorbed dose of 50 kGy during accelerated aging after storage in air for a certain time
Fig. 6. Evolution of 6 A0/N0, N28, A28 in nitrogen atmosphere at 70 °C
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