Microphase Separation and Shear Alignment of Gradient Copolymers: Melt Rheology and Small-Angle X-Ray Scattering Analysis

2008 ◽  
Vol 41 (15) ◽  
pp. 5818-5829 ◽  
Author(s):  
Michelle M. Mok ◽  
Saswati Pujari ◽  
Wesley R. Burghardt ◽  
Christine M. Dettmer ◽  
SonBinh T. Nguyen ◽  
...  
Keyword(s):  
Small Angle ◽  
Microphase Separation ◽  
Melt Rheology ◽  
Gradient Copolymers ◽  
X Ray ◽  
Shear Alignment ◽  
X Ray Scattering ◽  
Ray Scattering

A small-angle X-ray scattering study of microphase separation transition of polyurethanes: Effect of hard segments

1995 ◽  
Vol 2 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Kung Linliu ◽  
Show-An Chen ◽  
T. L. Yu ◽  
Tsang-Lang Lin ◽  
Chih-Hao Lee ◽  
...  
Keyword(s):  
Small Angle ◽  
Microphase Separation ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Hard Segments ◽  
Ray Scattering

Study of Microphase Separation in Solid, Binary Alkane Mixtures by Small Angle Neutron and X-ray Scattering

1996 ◽  
Vol 100 (5) ◽  
pp. 1725-1730 ◽  
Author(s):  
B. K. Annis ◽  
J. D. Londono ◽  
G. D. Wignall ◽  
R. G. Snyder
Keyword(s):  
Small Angle ◽  
Microphase Separation ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Linear Melt Rheology and Small-Angle X-ray Scattering of AB Diblocks vs A2B2Four Arm Star Block Copolymers

2000 ◽  
Vol 33 (22) ◽  
pp. 8399-8414 ◽  
Author(s):  
D. M. A. Buzza ◽  
A. H. Fzea ◽  
J. B. Allgaier ◽  
R. N. Young ◽  
R. J. Hawkins ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Small Angle ◽  
Melt Rheology ◽  
X Ray ◽  
X Ray Scattering ◽  
Star Block Copolymers ◽  
Ray Scattering

Small-Angle X-ray Scattering Study of the Microphase Separation Transition in Asymmetric Diblock Copolymers:  A Model “B” Kinetic Phenomenon

1998 ◽  
Vol 31 (9) ◽  
pp. 3109-3115 ◽  
Author(s):  
James A. Gupta ◽  
Marsha A. Singh ◽  
Gregory J. Salomons ◽  
W. Adam Foran ◽  
Malcolm S. Capel
Keyword(s):  
Small Angle ◽  
Diblock Copolymers ◽  
Microphase Separation ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetic Phenomenon ◽  
Scattering Study ◽  
Ray Scattering

Small-Angle X-Ray Scattering Study of Microand Macro-Phase Separations in Blends of Block Copolymer with Homopolymer

1986 ◽  
Vol 79 ◽  
Author(s):  
R. J. Roe ◽  
S. Nojima
Keyword(s):  
Chain Length ◽  
Small Angle ◽  
Microphase Separation ◽  
Short Chain Length ◽  
X Ray ◽  
Disorder Phase Transition ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Styrene Butadiene ◽  
Ray Scattering

AbstractThe order-disorder phase transition behavior exhibited by blends of a styrene-butadiene diblock copolymer (76% styrene) with a polystyrene of various molecular weight (from 2,200 to 50,000) is studied by means of small-angle X-ray scattering. With a polystyrene of a relatively short chain length the blend, on lowering the temperature, undergoes a microphase separation, and the scattering curve shows a peak at a finite scattering angle. With a polystyrene of relatively long chain length, the scattered intensity curve shows additional low angle component with intensity increasing rapidly as q→0, and this is interpreted in terms of the macrophase separation accompanying the transition from the disordered to ordered phase.

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.

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