Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam

Pu-Cheng Wang; Qiang Liu; Bo Liu; Wei Huang; You An; Jian-Yong Liu; Hong-Bing Chen

doi:10.1007/s10118-023-2993-4

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Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam

RESEARCH ARTICLE | Updated：2023-11-27

- Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam
- Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam
- 高分子科学（英文版） 2023年41卷第12期页码：1969-1978
- Affiliations：
  
  Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
- Author bio：
  
  hongbing2014@foxmail.com
- Funds：
  
  This work was financially supported by Science Challenge Project (No. TZ2018004) and National Natural Science Foundation of China (No. 52103131). We would like to thank the Analytical & Testing Center of Sichuan University for providing Materials Studio and we would be grateful to Daichuan Ma for his help in computational simulations. We also appreciate Dr. Jianying Hu from the Department of Transportation of Southwest University for her help in MATLAB utilization.
- DOI：10.1007/s10118-023-2993-4
  中图分类号：
- 收稿：2023-02-25，
  
  修回：2023-4-12，
  
  录用：2023-4-19，
  
  网络首发：2023-06-12，
  
  纸质出版：2023-12-01
- Accepted：
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Wang, P. C.; Liu, Q.; Liu, B.; Huang, W.; An, Y.; Liu, J. Y.; Chen, H. B. Synergistic effects of gamma irradiation, tensile stress and moisture on the radiolysis of silicone foam. Chinese J. Polym. Sci. 2023, 41, 1969–1978

Pu-Cheng Wang, Qiang Liu, Bo Liu, et al. Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam[J]. Chinese Journal of Polymer Science, 2023, 41(12): 1969-1978.
Wang, P. C.; Liu, Q.; Liu, B.; Huang, W.; An, Y.; Liu, J. Y.; Chen, H. B. Synergistic effects of gamma irradiation, tensile stress and moisture on the radiolysis of silicone foam. Chinese J. Polym. Sci. 2023, 41, 1969–1978 DOI： 10.1007/s10118-023-2993-4.

Pu-Cheng Wang, Qiang Liu, Bo Liu, et al. Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam[J]. Chinese Journal of Polymer Science, 2023, 41(12): 1969-1978. DOI： 10.1007/s10118-023-2993-4.

摘要

The work involves investigation of synergistic effects of gamma irradiation

tensile stress and absorbed moisture on the radiolysis behaviors of silicone foams by experiments and theoretical simulations. The synergistic effects unveiled by reactive molecular dynamics at the atomic scale are due to the moisture-induced neutralization and stabilization of the macromolecular radicals.

Abstract

The present work involves the investigation of the synergistic effects of gamma irradiation

tensile stress and absorbed moisture on the radiolysis behaviors of silicone foams by experiments and theoretical simulations. For both the pristine and dehydrated samples

the permanent tensile set increases with the initial tensile strain. Further analysis uncovers that the dehydrated samples exhibit greater permanent tensile sets

lower further elongation and higher Young’s modulus than the counterparts of the pristine samples with the same initial tensile strain and gamma dose

verifying the vital synergistic effects on crosslinking network and aggregation structures caused by moisture and gamma radiation. The synergistic effects unveiled by reactive molecular dynamics at the atomic scale are due to the moisture-induced neutralization and stabilization of the macromolecular radicals. The steric hindrance of moisture located at the interface of silica and polymer chains also conduces to the observed synergistic effects due to the inhibited crosslinking reactions.

关键词

Keywords

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