Crystal size shrinking in radiation-induced crosslinking of polytetrafluoroethylene: Synchrotron small angle X-ray scattering and scanning electron microscopy analysis

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	Crystal size shrinking in radiation-induced crosslinking of polytetrafluoroethylene: Synchrotron small angle X-ray scattering and scanning electron microscopy analysis
	Tang, ZF ; Wang, MH ; Tian, F ; Xu, L ; Wu, GZ
刊名	EUROPEAN POLYMER JOURNAL
	2014
卷号	59 页码:156—160
关键词	LINKED POLYTETRAFLUOROETHYLENE CHEMICAL-STRUCTURE BEAM IRRADIATION TEMPERATURE STATE PTFE POLY(TETRAFLUOROETHYLENE) IMPROVEMENT RESISTANCE NMR
ISSN号	0014-3057
通讯作者	wuguozhong@sinap.ac.cn
英文摘要	The crystal structure of crosslinked polytetrafluoroethylene (XPTFE) and its morphological variations as compared with pure PTFE were investigated using differential scanning calorimetry, synchrotron small angle X-ray scattering (SAXS), and scanning electron microscopy (SEM). The XFTFE samples were obtained by irradiating PTFE at the melt state using different radiation doses. Results showed that the melting temperature of the XPTFE decreases with the increase in radiation dose. The crystal melting enthalpy increases under low-dose irradiation. The scattering intensity decreases with the increase in radiation dose, which indicates the decrease in crystal size. Based on the SAXS patterns, the XPTFE crystallite size is smaller than the PTFE crystallite size. The difference in crystal sizes is more pronounced for XPTFE obtained under high radiation doses. This finding is confirmed by the SEM images of the XPTFE fractured surfaces. These results provide a reasonable explanation for the improved transparency and the relatively low crystallinity and high wear resistance of XPTFE compared with PTFE. (C) 2014 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000343341100018
公开日期	2015-03-13
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/14062]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Tang, ZF,Wang, MH,Tian, F,et al. Crystal size shrinking in radiation-induced crosslinking of polytetrafluoroethylene: Synchrotron small angle X-ray scattering and scanning electron microscopy analysis[J]. EUROPEAN POLYMER JOURNAL,2014,59:156—160.
APA	Tang, ZF,Wang, MH,Tian, F,Xu, L,&Wu, GZ.(2014).Crystal size shrinking in radiation-induced crosslinking of polytetrafluoroethylene: Synchrotron small angle X-ray scattering and scanning electron microscopy analysis.EUROPEAN POLYMER JOURNAL,59,156—160.
MLA	Tang, ZF,et al."Crystal size shrinking in radiation-induced crosslinking of polytetrafluoroethylene: Synchrotron small angle X-ray scattering and scanning electron microscopy analysis".EUROPEAN POLYMER JOURNAL 59(2014):156—160.