Structure transfer between a polymer melt and the solid state. Investigation of the nanostructure evolution in oriented polyethylene by means of continuous X-ray scattering

2005 ◽  
pp. 127-139
Author(s):  
Norbert Stribeck ◽  
Peter Bösecke ◽  
Rüdiger Bayer ◽  
Armando Almendarez Camarillo
Keyword(s):  
Solid State ◽  
Polymer Melt ◽  
X Ray ◽  
X Ray Scattering ◽  
Oriented Polyethylene ◽  
Ray Scattering

Influence of growth interruption on the formation of solid-state interfaces

2006 ◽  
Vol 21 (2) ◽  
pp. 122-124
Author(s):  
I. Busch ◽  
J. Stümpel ◽  
M. Krumrey
Keyword(s):  
Solid State ◽  
Molecular Beam Epitaxy ◽  
Correlation Length ◽  
Molecular Beam ◽  
Morphological Properties ◽  
X Ray ◽  
X Ray Scattering ◽  
Growth Interruption ◽  
Vertical Correlation ◽  
Ray Scattering

In this study, the effects of growth interruptions on the formation of the interfaces in GaAs∕AlAs multilayers are investigated. For that purpose, a series of different samples has been manufactured with molecular-beam epitaxy. The introduction of growth interruptions of 50 s after the deposition of the layer leads to a change in the morphological properties of the interfaces, in particular their correlation length. These modifications due to the growth interrupt are analyzed with diffuse X-ray scattering. As a result of the measurements, an extension of the lateral correlation length can be proved. By contrast, the vertical correlation of the interfaces is not affected.

On the X-ray Scattering Factor of Metallic Lithium in the Long-Wavelength Limit: The "Solid State Effect"

1980 ◽  
Vol 35 (4) ◽  
pp. 373-377 ◽  
Author(s):  
E. G. Visser ◽  
W. Geertsma ◽  
W. van der Lugt ◽  
J. Th. M. de Hosson
Keyword(s):  
Solid State ◽  
Successive Approximations ◽  
X Ray ◽  
Long Wavelength ◽  
X Ray Scattering ◽  
State Effect ◽  
Metallic Lithium ◽  
Scattering Factor ◽  
Electron Wavefunction ◽  
Ray Scattering

Abstract By considering three successive approximations to the conduction-electron wavefunction of metallic lithium, it is shown that the X-ray scattering factor at small wavevectors is very sensitive to the model chosen for describing the electron density. It is demonstrated that, when screened pseudopotentials are used, the "solid state effect" is almost negligible in this region of wave-vectors.

scholarly journals Supramolecular Dimerization in a Polymer Melt from Small-Angle X-ray Scattering and Rheology: A Miscible Model System

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 880
Author(s):  
Mariapaola Staropoli ◽  
Margarita Kruteva ◽  
Jürgen Allgaier ◽  
Andreas Wischnewski ◽  
Wim Pyckhout-Hintzen
Keyword(s):  
Hydrogen Bonding ◽  
Small Angle ◽  
Full Range ◽  
Polymer Melt ◽  
Self Healing ◽  
Temperature Dependent ◽  
Base Pairs ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

We present a structural and dynamic study on the simplest supramolecular hetero-association, recently investigated by the authors to prepare architectural homogeneous structures in the melt state, based on the bio-inspired hydrogen-bonding of thymine/diaminotriazine (thy–DAT) base-pairs. In the combination with an amorphous low Tg poly(butylene oxide) (PBO), no micellar structures are formed, which is expected for nonpolar polymers because of noncompatibility with the highly polar supramolecular groups. Instead, a clear polymer-like transient architecture is retrieved. This makes the heterocomplementary thy–DAT association an ideal candidate for further exploitation of the hydrogen-bonding ability in the bulk for self-healing purposes, damage management in rubbers or even the development of easily processable branched polymers with built-in plasticizer. In the present work, we investigate the temperature range from Tg + 20 °C to Tg + 150 °C of an oligomeric PBO using small-angle X-ray scattering (SAXS) and linear rheology on the pure thy and pure DAT monofunctionals and on an equimolar mixture of thy/DAT oligomers. The linear rheology performed at low temperature is found to correspond to fully closed-state dimeric configurations. At intermediate temperatures, SAXS probes the equilibrium between open and closed states of the thy–DAT mixtures. The temperature-dependent association constant in the full range between open and closed H-bonds and an enhancement of the monomeric friction coefficient due to the groups is obtained. The thy–DAT association in the melt is more stable than the DAT–DAT, whereas the thy–thy association seems to involve additional long-lived interactions.

scholarly journals Structural and Dynamic Markers of Membrane Osmotic Stress From X-Ray Scattering and Solid-State 2H NMR

2009 ◽  
Vol 96 (3) ◽  
pp. 356a
Author(s):  
Avigdor Leftin ◽  
Matthew J. Justice ◽  
Jacob G. Kinnun ◽  
Horia I. Petrache ◽  
Michael F. Brown
Keyword(s):  
Solid State ◽  
Osmotic Stress ◽  
2H Nmr ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Microstructure of high modulus solid state extruded polyethylene: 2. X-ray scattering studies of 12, 24 and 36 extrusion draw ratio

Polymer ◽  
1985 ◽  
Vol 26 (1) ◽  
pp. 17-26 ◽  
Author(s):  
W.Wade Adams ◽  
Robert M. Briber ◽  
Edward S. Sherman ◽  
Roger S. Porter ◽  
Edwin L. Thomas
Keyword(s):  
Solid State ◽  
Draw Ratio ◽  
High Modulus ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals The Effect of Ceramide on Model Membranes and Apoptotic Cells Determined by X-Ray Scattering, Solid State NMR, and Flow Cytometry

2010 ◽  
Vol 98 (3) ◽  
pp. 465a-466a
Author(s):  
Matthew J. Justice ◽  
Adriana L. Rogozea ◽  
Daniela N. Petrusca ◽  
Irina Petrache ◽  
Stephen R. Wassall ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Solid State ◽  
Solid State Nmr ◽  
Model Membranes ◽  
Apoptotic Cells ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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