Reversible structural transformation and redox properties of Cr-loaded iron oxide dendrites studied by in situ XANES spectroscopy

2020 ◽  
Vol 22 (48) ◽  
pp. 28093-28099
Author(s):  
Hirosuke Matsui ◽  
Nozomu Ishiguro ◽  
Youya Suzuki ◽  
Kouhei Wakamatsu ◽  
Chiharu Yamada ◽  
...  
Keyword(s):  
Phase Transition ◽  
Iron Oxide ◽  
Structural Transformation ◽  
Crystalline Structure ◽  
Crystalline Phase ◽  
Redox Properties ◽  
Reversible Structural Transformation ◽  
In Situ Xanes ◽  
Crystalline Phase Transition

Cr-Loaded iron oxide with a dendritic crystalline structure was synthesized and the reversible crystalline phase transition during redox cycling of the iron oxide was investigated.

In situ Raman and Time-Resolved Luminescence Investigation of the Local Structure of ZrO2 in the Amorphous to Crystalline Phase Transition

2012 ◽  
Vol 116 (31) ◽  
pp. 16776-16783 ◽  
Author(s):  
Carmen Tiseanu ◽  
Vasile I. Parvulescu ◽  
Bogdan Cojocaru ◽  
Kelly Pemartin ◽  
Margarita Sanchez-Dominguez ◽  
...  
Keyword(s):  
Phase Transition ◽  
Crystalline Phase ◽  
Local Structure ◽  
Time Resolved ◽  
In Situ Raman ◽  
Luminescence Investigation ◽  
Crystalline Phase Transition

Amorphous-to-crystalline phase transition of (InTe)x(GeTe) thin films

2010 ◽  
Vol 108 (2) ◽  
pp. 024506 ◽  
Author(s):  
Ki-Ho Song ◽  
Seung-Cheol Beak ◽  
Hyun-Yong Lee
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Crystalline Phase ◽  
Crystalline Phase Transition

Improving dispersive mixing in compatibilized polystyrene/polyamide-6 blends via extension-dominated reactive single-screw extrusion

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hao Chen ◽  
João M. Maia
Keyword(s):  
Phase Transition ◽  
Crystalline Phase ◽  
Reactive Extrusion ◽  
Polyamide 6 ◽  
Single Plane ◽  
Single Screw ◽  
Single Screw Extrusion ◽  
Double Plane ◽  
Dispersive Mixing ◽  
Crystalline Phase Transition

Abstract Extensional mixing elements (EMEs) that impose extension-dominated flow via stationary single-plane or double-plane hyperbolic converging-diverging channels were previously designed for twin-screw and single-screw extruders (TSE and SSE, respectively). In a recently published work by the authors, reactive extrusion was performed on PS/PA6 polymer blends TSE using EMEs and a crystalline phase transition of the minor phase in these droplets was observed as the size of droplet decreases from micron to submicron. Herein, we expand upon this work to SSE and study: a) The ability of the EMEs to improve dispersive mixing in the same blends; b) Assess the possibility of achieving the same crystalline phase transition in SSEs. The final blends were characterized by DSC, rheologically and morphologically via SEM, and the results show that while EME-based SSE leads to much improved mixing, better than non-EME TSE, the reduction in size of the PA6 disperse phase is not enough to induce the phase transition observed in EME-based TSE.

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