Effects of different colorants on morphological development of sheared isotactic polypropylene: A study using synchrotron wide-angle x-ray scattering

2008 ◽  
Vol 103 (12) ◽  
pp. 124906 ◽  
Author(s):  
Peng-wei Zhu ◽  
Jason Tung ◽  
Graham Edward ◽  
Lance Nichols
Keyword(s):  
Isotactic Polypropylene ◽  
Morphological Development ◽  
Wide Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Microstructure characterization in a single isotactic polypropylene spherulite by synchrotron microfocus wide angle X-ray scattering

Polymer ◽  
2018 ◽  
Vol 142 ◽  
pp. 387-393 ◽  
Author(s):  
Baobao Chang ◽  
Konrad Schneider ◽  
Nilesh Patil ◽  
Stephan Roth ◽  
Gert Heinrich
Keyword(s):  
Isotactic Polypropylene ◽  
Microstructure Characterization ◽  
Wide Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Mapping structural gradients in isotactic polypropylene using scanning wide-angle X-ray scattering

Polymer ◽  
2013 ◽  
Vol 54 (7) ◽  
pp. 1867-1875 ◽  
Author(s):  
Håvard Granlund ◽  
Jostein Bø Fløystad ◽  
Morteza Esmaeili ◽  
Eirik Torbjørn Bakken ◽  
Martin Bech ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Wide Angle ◽  
X Ray ◽  
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.

scholarly journals Time-Resolving Study of Stress-Induced Transformations of Isotactic Polypropylene through Wide Angle X-ray Scattering Measurements

Polymers ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 162 ◽  
Author(s):  
Finizia Auriemma ◽  
Claudio De Rosa ◽  
Rocco Di Girolamo ◽  
Anna Malafronte ◽  
Miriam Scoti ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Wide Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Measurements ◽  
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>

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