CAS OpenIR  > 中科院上海原子核所2003年前
Direct evidence of positron trapping at polar groups in a polymer-blend system
Nagai, Y; Nonaka, T; Hasegawa, M; Kobayashi, Y; Wang, CL; Zheng, W; Zhang, C
1999
Source PublicationPHYSICAL REVIEW B
ISSN1098-0121
Volume60Issue:17Pages:11863
AbstractEnergy spectra of positron annihilation radiation were measured in polymer blends of polyethylene and ethylene vinyl acetate copolymer (E/VA) by means of the coincidence Doppler broadening technique. Positron annihilation with the core electrons of oxygen was appreciably increased by the addition of small amounts of E/VA to polyethylene and was detected with a sensitivity one order of magnitude higher than would be expected from the number density of the oxygen atoms in the polymer blends. This clearly shows that the positron is sensitively trapped by the polar acetate group of E/VA and demonstrates the usefulness of positrons as a sensitive chemical probe for polar structures in a nonpolar polymer matrix with high positron mobility. [S0163-1829(99)00941-8].
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000083808700007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9935
Collection中科院上海原子核所2003年前
Recommended Citation
GB/T 7714
Nagai, Y,Nonaka, T,Hasegawa, M,et al. Direct evidence of positron trapping at polar groups in a polymer-blend system[J]. PHYSICAL REVIEW B,1999,60(17):11863.
APA Nagai, Y.,Nonaka, T.,Hasegawa, M.,Kobayashi, Y.,Wang, CL.,...&Zhang, C.(1999).Direct evidence of positron trapping at polar groups in a polymer-blend system.PHYSICAL REVIEW B,60(17),11863.
MLA Nagai, Y,et al."Direct evidence of positron trapping at polar groups in a polymer-blend system".PHYSICAL REVIEW B 60.17(1999):11863.
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