scholarly journals Microstructural Evolution of Isotactic -Polypropylene during Creep: An In Situ Study by Synchrotron Small-Angle X-Ray Scattering

2017 ◽  
Vol 302 (10) ◽  
pp. 1700152 ◽  
Author(s):  
Baobao Chang ◽  
Konrad Schneider ◽  
Gert Heinrich
Keyword(s):  
Microstructural Evolution ◽  
Isotactic Polypropylene ◽  
Small Angle ◽  
X Ray ◽  
In Situ Study ◽  
X Ray Scattering ◽  
Ray Scattering

Microstructural Evolution of Long-Period Stacking Ordered Structures in Mg97Y2Zn1 Alloys Examined by In-Situ Small-Angle X-ray Scattering

2014 ◽  
Vol 45 (11) ◽  
pp. 4780-4785 ◽  
Author(s):  
Hiroshi Okuda ◽  
Toshiki Horiuchi ◽  
Shoki Hifumi ◽  
Michiaki Yamasaki ◽  
Yoshihito Kawamura ◽  
...  
Keyword(s):  
Microstructural Evolution ◽  
Small Angle ◽  
Ordered Structures ◽  
X Ray ◽  
Long Period ◽  
X Ray Scattering ◽  
Ray Scattering

In situ study of the state of lysozyme molecules at the very early stage of the crystallization process by small-angle X-ray scattering

2016 ◽  
Vol 61 (1) ◽  
pp. 5-10 ◽  
Author(s):  
M. A. Marchenkova ◽  
V. V. Volkov ◽  
A. E. Blagov ◽  
Yu. A. Dyakova ◽  
K. B. Ilina ◽  
...  
Keyword(s):  
Small Angle ◽  
Crystallization Process ◽  
Early Stage ◽  
The State ◽  
X Ray ◽  
In Situ Study ◽  
X Ray Scattering ◽  
Ray Scattering

In Situ X-Ray Characterization of Isotactic Polypropylene: Dependence of the Crystalline Properties on the Draw Down Ratio

2008 ◽  
Vol 587-588 ◽  
pp. 572-576
Author(s):  
Paulo E. Lopes ◽  
William T. Pennington ◽  
Michael S. Ellison
Keyword(s):  
Isotactic Polypropylene ◽  
Small Angle ◽  
Ex Situ ◽  
Wide Angle ◽  
Experimental Conditions ◽  
Crystalline Orientation ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Polymer crystalline regions can be characterized by wide-angle X-ray scattering (WAXS) and small-angle X-ray scattering (SAXS). The in-situ study of isotactic polypropylene with measurement of wide angle and small angle X-ray scattering (WAXS and SAXS), at varying distances from the exit of the extruder have been successfully completed using an X-ray system with a standard X-ray source. The processing conditions, used were: 50, 100, 200 and 400m.min-1 for the take up speed, 0.3, 0.6, and 1.2 cm3min-1hole-1 for the melt flow rates, and a spinning temperature of 220°C. These experimental conditions produced draw down ratios ranging from 33 up to 1058. The X-ray characterization was carried in-situ at 15, 30, 45 and 60 cm from the exit of the spinneret and also ex-situ. The results obtained show the crystallinity index and the crystalline orientation to increase for the higher draw down rates, as expected under draw induced crystallization conditions, and a logarithmic relationship was observed within the experimental conditions used in this work. This communication reports the relationship between the crystallinity, crystalline orientation and lamellar long period and draw down ratio along the spin line.

In situ study of aggregation of soot particles in an acetylene flame by small-angle x-ray scattering

2007 ◽  
Vol 101 (11) ◽  
pp. 114304 ◽  
Author(s):  
M. Sztucki ◽  
T. Narayanan ◽  
G. Beaucage
Keyword(s):  
Small Angle ◽  
X Ray ◽  
Soot Particles ◽  
In Situ Study ◽  
X Ray Scattering ◽  
Ray Scattering

In-situ study of precipitates in Al–Zn–Mg–Cu alloys using anomalous small-angle x-ray scattering

2016 ◽  
Vol 25 (6) ◽  
pp. 066101 ◽  
Author(s):  
Chun-Ming Yang ◽  
Feng-Gang Bian ◽  
Bai-Qing Xiong ◽  
Dong-Mei Liu ◽  
Yi-Wen Li ◽  
...  
Keyword(s):  
Small Angle ◽  
X Ray ◽  
In Situ Study ◽  
X Ray Scattering ◽  
Cu Alloys ◽  
Ray Scattering

A Revised O2 Reduction Model in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering

2019 ◽  
Author(s):  
Christian Prehal ◽  
Aleksej Samojlov ◽  
Manfred Nachtnebel ◽  
Manfred Kriechbaum ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Reduction Mechanism ◽  
Reduction Model ◽  
X Ray ◽  
X Ray Scattering ◽  
O2 Reduction ◽  
Ray Scattering

<b>Here we use in situ small and wide angle X-ray scattering to elucidate unexpected mechanistic insights of the O2 reduction mechanism in Li-O2 batteries.<br></b>

In situ Time-Resolved Small-Angle X-ray Scattering Reveals the Formation Kinetics of Polyelectrolyte Complex Micelles

2019 ◽  
Author(s):  
Hao Wu ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Matthew Tirrell
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Electrostatic Interactions ◽  
Polyelectrolyte Complex ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

We have directly observed the <i>in situ</i> self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. This work has elucidated one general kinetic pathway for the process of PEC micelle formation, which provides useful physical insights for increasing our fundamental understanding of complexation and self-assembly dynamics driven by electrostatic interactions that occur on ultrafast timescales.

Evolution of Pore Ordering during Anodizing of Aluminum Single Crystals: In Situ Small-Angle X-ray Scattering Study

2021 ◽  
Author(s):  
Ilya V. Roslyakov ◽  
Andrei P. Chumakov ◽  
Andrei A. Eliseev ◽  
Alexey P. Leontiev ◽  
Oleg V. Konovalov ◽  
...  
Keyword(s):  
Single Crystals ◽  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering

In situ small-angle x-ray scattering study of nanostructure evolution during decomposition of arc evaporated TiAlN coatings

2009 ◽  
Vol 94 (5) ◽  
pp. 053114 ◽  
Author(s):  
M. Odén ◽  
L. Rogström ◽  
A. Knutsson ◽  
M. R. Terner ◽  
P. Hedström ◽  
...  
Keyword(s):  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering
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