Microstructural Evolution of Nafion During Uniaxial Deformation Monitored by X-ray Scattering

Author(s):  
Meredith N. Silberstein ◽  
J. David Londono ◽  
Mary C. Boyce
2014 ◽  
Vol 45 (11) ◽  
pp. 4780-4785 ◽  
Author(s):  
Hiroshi Okuda ◽  
Toshiki Horiuchi ◽  
Shoki Hifumi ◽  
Michiaki Yamasaki ◽  
Yoshihito Kawamura ◽  
...  

Polymer ◽  
2007 ◽  
Vol 48 (17) ◽  
pp. 5125-5132 ◽  
Author(s):  
Yujing Tang ◽  
Zhiyong Jiang ◽  
Yongfeng Men ◽  
Lijia An ◽  
Hans-Friedrich Enderle ◽  
...  

2015 ◽  
Vol 48 (4) ◽  
pp. 1016-1022 ◽  
Author(s):  
Tsukasa Miyazaki ◽  
Keisuke Shimokita ◽  
Hiroki Ogawa ◽  
Katsuhiro Yamamoto

A simple three-dimensional structural evaluation system for a film during uniaxial deformation has been developed. The system is realized with an automatic film stretching machine, which allows the horizontally symmetric stretching of a film, and a synchrotron radiation X-ray scattering apparatus. Using this system, two-dimensional patterns of small-angle X-ray scattering and wide-angle X-ray diffraction can be obtained simultaneously during film stretching in the so-called edge and end views, together with stress–strain data. As cylindrical symmetry of the structure can be expected for a uniaxially stretched film, the two-dimensional patterns in the through view are identical to those in the edge view, indicating that three-dimensional structural characterization can be performed with a combination of edge and end views during film stretching. For amorphous poly(ethylene terephthalate) and crystalline poly(vinyl alcohol) films, the preliminary results of three-dimensional structural characterization during film stretching are shown.


2020 ◽  
Vol 39 (1) ◽  
pp. 102-112
Author(s):  
Pin-Zhang Chen ◽  
Hao-Yuan Zhao ◽  
Zhi-Jie Xia ◽  
Qian-Lei Zhang ◽  
Dao-Liang Wang ◽  
...  

Polymer ◽  
2018 ◽  
Vol 139 ◽  
pp. 60-67 ◽  
Author(s):  
Yimin Mao ◽  
David G. Bucknall ◽  
Robert M. Kriegel

Author(s):  
Eva-Maria Mandelkow ◽  
Eckhard Mandelkow ◽  
Joan Bordas

When a solution of microtubule protein is changed from non-polymerising to polymerising conditions (e.g. by temperature jump or mixing with GTP) there is a series of structural transitions preceding microtubule growth. These have been detected by time-resolved X-ray scattering using synchrotron radiation, and they may be classified into pre-nucleation and nucleation events. X-ray patterns are good indicators for the average behavior of the particles in solution, but they are difficult to interpret unless additional information on their structure is available. We therefore studied the assembly process by electron microscopy under conditions approaching those of the X-ray experiment. There are two difficulties in the EM approach: One is that the particles important for assembly are usually small and not very regular and therefore tend to be overlooked. Secondly EM specimens require low concentrations which favor disassembly of the particles one wants to observe since there is a dynamic equilibrium between polymers and subunits.


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