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In Situ Small Angle X-ray Scattering Study on Structural Evolution of Crosslinked Polytetrafluoroethylene During Deformation
Li, XY; Tian, F; Yang, CM; Tang, ZF; Miao, XR; Wu, GZ; Li, XH; Wang, J; Li, LB; lixiuhong@sinap.ac.cn
2014
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume131Issue:4
AbstractThe structural evolution of virgin and crosslinked polytetrafluoroethylene (PTFE) during stretching was studied by in situ synchrotron small-angle X-ray scattering (SAXS). Both yield and tensile stress of crosslinked PTFE increased with increasing crosslinking density. During stretching, for virgin PTFE, amorphous chains gradually turned to tensile direction at early stage, perpendicularly arranged lamellar stacks appeared at high strains (>140%). While for crosslinked PTFE, lamellar structure was observed even at lower strains; with increasing irradiation dose, the lamellar structure became obvious and the long period decreased. Four-point SAXS patterns were observed only in 3000kGy-dosed PTFE during deformation, which indicated that an alternately tilted lamella arrangement called herringbone structure was formed. Radiation dose induces crosslinked networks formed, which can carry part of local stress during deformation, resulting in the increase of yield and tensile stress. Crosslinking density is an important factor on structural evolution. In addition, a deformation mechanism of different crosslinked PTFE is proposed. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39883.
KeywordIsotactic Polypropylene Chemical-structure Ptfe Behavior Fracture Linking Fibers Saxs Resistance Phase
Indexed BySCI
Language英语
WOS IDWOS:000331066200021
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14186
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorlixiuhong@sinap.ac.cn
Recommended Citation
GB/T 7714
Li, XY,Tian, F,Yang, CM,et al. In Situ Small Angle X-ray Scattering Study on Structural Evolution of Crosslinked Polytetrafluoroethylene During Deformation[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2014,131(4).
APA Li, XY.,Tian, F.,Yang, CM.,Tang, ZF.,Miao, XR.,...&lixiuhong@sinap.ac.cn.(2014).In Situ Small Angle X-ray Scattering Study on Structural Evolution of Crosslinked Polytetrafluoroethylene During Deformation.JOURNAL OF APPLIED POLYMER SCIENCE,131(4).
MLA Li, XY,et al."In Situ Small Angle X-ray Scattering Study on Structural Evolution of Crosslinked Polytetrafluoroethylene During Deformation".JOURNAL OF APPLIED POLYMER SCIENCE 131.4(2014).
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