The ability of the Coincidence Doppler Broadening Spectroscopy to characterize polymers containing different chemical elements

doi:10.1016/j.saa.2017.01.028

	The ability of the Coincidence Doppler Broadening Spectroscopy to characterize polymers containing different chemical elements
	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
刊名	SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
	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
内容类型	期刊论文
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.