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Study of gamma irradiation effect on unplasticized PVC by positron annihilation
Wang BY(王宝义); Yang J(杨静); Cao XZ(曹兴忠); Wei L(魏龙); Yu RS(于润升); Wang, Bao Yi; Yang, Jing; Cao, Xing Zhong; Wei, Long; Yu, Run Sheng
Source PublicationDefect and Diffusion Forum
Volume373 DDFPages:274-279
SubtypeProceedings Paper
AbstractPositron annihilation technique is used to study the gamma irradiation effect on unplasticized PVC (UPVC). Positron annihilation lifetime spectroscopy (PALS) results show that both the o-Ps lifetime and intensity decrease with the increase of gamma irradiation dose. By comparing Coincidence Doppler Broadening (CDB) results of four typical polymers using different reference sample, it is confirmed that CDB ratio curve can truthfully reflect the momentum difference of electrons which positrons annihilate with. The CDB results of gamma-irradiated UPVC using non-irradiated UPVC rather than commonly chosen LDPE as a reference sample show obvious oxygen peak, together with FTIR results, verify the appearance of carbonyl groups around the free volume. © 2016 Trans Tech Publications, Switzerland.
Conference Title17th International Conference onPositron Annihilation, ICPA-17
Conference PlaceWuhan, China
Conference DateSeptember 20, 2016 - September 25, 2016
Indexed ByEI
EI Accession Number20171403528954
EI KeywordsElectrons - Fourier transform infrared spectroscopy - Gamma rays - Polyvinyl chlorides - Positron annihilation spectroscopy - Positrons
EI Classification Number801 Chemistry - 815.1.1 Organic Polymers - 931.3 Atomic and Molecular Physics
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Document Type期刊论文
AffiliationInstitute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Wang BY,Yang J,Cao XZ,et al. Study of gamma irradiation effect on unplasticized PVC by positron annihilation[J]. Defect and Diffusion Forum,2016,373 DDF:274-279.
APA 王宝义.,杨静.,曹兴忠.,魏龙.,于润升.,...&Yu, Run Sheng.(2016).Study of gamma irradiation effect on unplasticized PVC by positron annihilation.Defect and Diffusion Forum,373 DDF,274-279.
MLA 王宝义,et al."Study of gamma irradiation effect on unplasticized PVC by positron annihilation".Defect and Diffusion Forum 373 DDF(2016):274-279.
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