Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| 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 Publication | JOURNAL OF APPLIED POLYMER SCIENCE
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| ISSN | 0021-8995 |
| Volume | 131Issue:4 |
| Abstract | The 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. |
| Keyword | Isotactic Polypropylene Chemical-structure Ptfe Behavior Fracture Linking Fibers Saxs Resistance Phase |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000331066200021 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/14186 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Corresponding Author | lixiuhong@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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| In Situ Small Angle （1174KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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