Segmental dynamics in the amorphous phase of nylon 66: solid state deuterium NMR

1990 ◽  
Vol 23 (8) ◽  
pp. 2169-2182 ◽  
Author(s):  
H. Miura ◽  
J. Hirschinger ◽  
Alan D. English
Keyword(s):  
Solid State ◽  
Amorphous Phase ◽  
Deuterium Nmr ◽  
Nylon 66 ◽  
Segmental Dynamics

Segmental dynamics in the crystalline phase of nylon 66: solid state deuterium NMR

1990 ◽  
Vol 23 (8) ◽  
pp. 2153-2169 ◽  
Author(s):  
J. Hirschinger ◽  
H. Miura ◽  
K. H. Gardner ◽  
Alan D. English
Keyword(s):  
Solid State ◽  
Crystalline Phase ◽  
Deuterium Nmr ◽  
Nylon 66 ◽  
Segmental Dynamics

Segmental Dynamics of Solid-State Poly(methylphenylsilane) by 1D and 2D Deuterium NMR

1998 ◽  
Vol 31 (15) ◽  
pp. 4852-4861 ◽  
Author(s):  
Robert D. O'Connor ◽  
Frank D. Blum ◽  
Eric Ginsburg ◽  
Robert D. Miller
Keyword(s):  
Solid State ◽  
Deuterium Nmr ◽  
Segmental Dynamics

Solid state amorphization reactions in deformed Ni-Zr multilayered composites

1990 ◽  
Vol 5 (3) ◽  
pp. 488-497 ◽  
Author(s):  
G. C. Wong ◽  
W. L. Johnson ◽  
E. J. Cotts
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Amorphous Phase ◽  
Equilibrium Phase ◽  
Solid State Reactions ◽  
Heat Of Mixing ◽  
Scanning Calorimetry ◽  
Multilayered Composites ◽  
State Amorphization ◽  
Thermal Stability Of

The mechanisms of metallic glass formation and competing crystallization processes in mechanically-deformed Ni-Zr multilayered composites have been investigated by means of differential scanning calorimetry and x-ray diffraction. Our investigation of the heat of formation of amorphous NixZr1−x alloys shows a large negative heat of mixing (on the order of 30 kJ/mole) for compositions near Zr55Ni45 with a compositional dependence qualitatively similar to that predicted by mean field theory. We find that the products of solid state reactions in composites of Ni and Zr can be better understood in terms of the equilibrium phase diagram and the thermal stability of liquid quenched metallic glasses. We have determined the composition of the growing amorphous phase at the Zr interface in these Ni-Zr diffusion couples to be 55 ± 4% Zr. We investigated the kinetics of solid state reactions competing with the solid state amorphization reaction and found the value of the activation energy of the initial crystallization and growth of the growing amorphous phase to be 2.0 ± 0.1 eV, establishing an upper limit on the thermal stability of the growing amorphous phase.

Amorphization of Thin Multilayer Films by Ion Mixing and Solid State Reaction

1983 ◽  
Vol 27 ◽  
Author(s):  
M. Van Rossum ◽  
U. Shreter ◽  
W. L. Johnson ◽  
M-A. Nicolet
Keyword(s):  
Solid State ◽  
Amorphous Phase ◽  
Solid State Reaction ◽  
Amorphous Alloys ◽  
Composition Range ◽  
Multilayer Films ◽  
Solid State Diffusion ◽  
State Diffusion ◽  
Thermochemical Parameters ◽  
Mixed Samples

ABSTRACTWe have compared the formation of amorphous alloys from Ni-Hf multilayer films by ion mixing and solid state diffusion. We find that ion mixing and solid state reaction produce significant differences in the composition range of the amorphous phase inside the mixed samples. Moreover, the thermochemical parameters which are of primary importance for the solid state reaction also influence the behavior of the Ni-Hf system under ion mixing.

Dynamic studies of s-trioxane in the solid state and in liquid crystalline solutions by deuterium NMR

1990 ◽  
Vol 94 (25) ◽  
pp. 8845-8850 ◽  
Author(s):  
E. Gelerinter ◽  
Zeev. Luz ◽  
R. Poupko ◽  
H. Zimmermann
Keyword(s):  
Solid State ◽  
Liquid Crystalline ◽  
Deuterium Nmr ◽  
Dynamic Studies

Synthesis of Deuterium-Labeled Plant Sterols and Analysis of Their Side-Chain Mobility by Solid State Deuterium NMR

1996 ◽  
Vol 61 (13) ◽  
pp. 4252-4257 ◽  
Author(s):  
Mary-Pierre Marsan ◽  
William Warnock ◽  
Isabelle Muller ◽  
Yoichi Nakatani ◽  
Guy Ourisson ◽  
...  
Keyword(s):  
Solid State ◽  
Plant Sterols ◽  
Side Chain ◽  
Deuterium Nmr ◽  
Chain Mobility
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