The ability of the Coincidence Doppler Broadening Spectroscopy to characterize polymers containing different chemical elements
文献类型：期刊论文
| 作者 | Cao, XZ ; Yu, RS; Wang, BY; Cao XZ(曹兴忠); Yu RS(于润升); Wang BY(王宝义); Zhang, T; Han, LA; Yang, J
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| 刊名 | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
 |
| 出版日期 | 2017 |
| 卷号 | 177页码:97-103 |
| 关键词 | Positron annihilation Polar groups Polymer |
| ISSN号 | 1386-1425 |
| DOI | 10.1016/j.saa.2017.01.028 |
| 文献子类 | Article |
| 英文摘要 | Hydrocarbon polymers, O-containing, F-containing and Cl-containing polymers are comprehensively studied by Coincidence Doppler Broadening Spectroscopy (CDBS). It is shown that for polymers with different chemical structure, CDBS results can effectively distinguish polar groups C =O, C-Cl, and C-F. For polymers with similar chemical structure, the intensity of the element-specific peak in the CDBS ratio curve is dependent not only on the fraction of free positrons, but also on the content of characteristic atom in polymer repeated unit, and the polarity of the polymer molecule. For polymers containing several different polar groups, such as PCTFE (C-F & C-Cl) and PFA (C-F & C =O), whether the element-specific peak appears or not depends on the amount of the polar groups and its positron capture ability. This work may provide insights into potential applications of CDBS for studying complex polymer systems. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | POSITRON-ANNIHILATION LIFETIME ; FREE-VOLUME HOLES ; POLAR GROUPS ; POLYPROPYLENE ; POLYETHYLENE ; ENVIRONMENT ; RADIATION ; SPECTRA ; PROBE ; LIGHT |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000397076500016 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284698]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Cao, XZ,Yu, RS,Wang, BY,et al. The ability of the Coincidence Doppler Broadening Spectroscopy to characterize polymers containing different chemical elements[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2017,177:97-103. |
| APA | Cao, XZ.,Yu, RS.,Wang, BY.,曹兴忠.,于润升.,...&Yang, J.(2017).The ability of the Coincidence Doppler Broadening Spectroscopy to characterize polymers containing different chemical elements.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,177,97-103. |
| MLA | Cao, XZ,et al."The ability of the Coincidence Doppler Broadening Spectroscopy to characterize polymers containing different chemical elements".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 177(2017):97-103. |
入库方式： OAI收割
来源：高能物理研究所
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