In situ small angle X-ray scattering study on structural evolution of crosslinked polytetrafluoroethylene during deformation
In situ small angle X-ray scattering study on structural evolution of crosslinked polytetrafluoroethylene during deformation
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原位小角X射线散射研究交联聚四氟乙烯变形过程中的结构演化
DOI：
10.1002/app.39883
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发表时间：
2014-02
影响因子：
3
通讯作者：
Li, Liangbin
中科院分区：
文献类型：
--
作者：
Li, Xiaoyun;Tian, Feng;Yang, Chunming;Tang, Zhongfeng;Miao, Xiaran;Wu, Guozhong;Li, Xiuhong;Wang, Jie;Li, Liangbin
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.
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影响因子：
4.6
作者：
Jinglei Yang;R. Williams;K. Peterson;P. Geil;T. Long;P. Xu
通讯作者：
Jinglei Yang;R. Williams;K. Peterson;P. Geil;T. Long;P. Xu
影响因子：
5.5
作者：
A. Fujimori;Y. Hayasaka
通讯作者：
A. Fujimori;Y. Hayasaka
影响因子：
5.5
作者：
Xuming Chen;C. Burger;D. Fang;I. Šics;Xuefen Wang;Weidong He;R. Somani;Kyunghwan Yoon;B. Hsiao;B. Chu
通讯作者：
Xuming Chen;C. Burger;D. Fang;I. Šics;Xuefen Wang;Weidong He;R. Somani;Kyunghwan Yoon;B. Hsiao;B. Chu
影响因子：
2.9
作者：
SUN, JZ;ZHANG, YF;ZHU, XG
通讯作者：
ZHU, XG
影响因子：
4.6
作者：
F. Zuo;J. Keum;Xuming Chen;B. Hsiao;Hongyu Chen;S. Lai;R. Wevers;Jing Li
通讯作者：
F. Zuo;J. Keum;Xuming Chen;B. Hsiao;Hongyu Chen;S. Lai;R. Wevers;Jing Li