Temperature dependence of local chain dynamics in atactic polypropylene: a neutron spin-echo study

2001 ◽  
Vol 301 (1-2) ◽  
pp. 157-162 ◽  
Author(s):  
Valeria Arrighi ◽  
C Pappas ◽  
A Triolo ◽  
S Pouget
Keyword(s):  
Temperature Dependence ◽  
Spin Echo ◽  
Neutron Spin ◽  
Atactic Polypropylene ◽  
Chain Dynamics ◽  
Neutron Spin Echo

First Cumulant for Chains with Constraints

1986 ◽  
Vol 79 ◽  
Author(s):  
A. Z Akcasu ◽  
B Hammouda ◽  
W. H Stockmayer ◽  
G. Tanaka
Keyword(s):  
Degrees Of Freedom ◽  
Hydrodynamic Interaction ◽  
Spin Echo ◽  
Neutron Spin ◽  
Scattering Function ◽  
Chain Dynamics ◽  
Neutron Spin Echo ◽  
A Chain ◽  
Freely Jointed Chains ◽  
Dynamic Scattering

AbstractThe Fixman-Kovac formulation of chain dynamics with constraints is used to calculate the first cumulant Q(q) of the dynamic scattering function. This general formalism is applied to the case of freely jointed chains. It is shown that the large q limit (q being the scattering wavenumber) of Q(q) for a chain of N bonds in the absence of hydrodynamic interaction is proportional to the ratio (2N+3)/3(N+l) representing the fraction of unconstrained degrees of freedom of the chain. The inclusion of hydrodynamic interaction seems to enhance the apparent segmental diffusion. The use of constrained chain dynamics has no appreciable effects, however, on the behavior of Q(q) in the small and intermediate q regions for long enough chains. This formalism can be used to interpret neutron (spin echo) scattering experiments from semiflexible polymers in solution.

Sensing Polymer Chain Dynamics through Ring Topology: A Neutron Spin Echo Study

2015 ◽  
Vol 115 (14) ◽  
Author(s):  
Sebastian Gooßen ◽  
Margarita Krutyeva ◽  
Melissa Sharp ◽  
Artem Feoktystov ◽  
Jürgen Allgaier ◽  
...  
Keyword(s):  
Polymer Chain ◽  
Spin Echo ◽  
Neutron Spin ◽  
Ring Topology ◽  
Chain Dynamics ◽  
Neutron Spin Echo

Study on the temperature-dependent coupling among viscosity, conductivity and structural relaxation of ionic liquids

2015 ◽  
Vol 17 (29) ◽  
pp. 19126-19133 ◽  
Author(s):  
Tsuyoshi Yamaguchi ◽  
Takuya Yonezawa ◽  
Shinobu Koda
Keyword(s):  
Ionic Liquids ◽  
Structural Relaxation ◽  
Spin Echo ◽  
Neutron Spin ◽  
Temperature Dependent ◽  
Frequency Dependent ◽  
Neutron Spin Echo ◽  
Dependent Viscosity

The frequency-dependent viscosity and conductivity of three imidazolium-based ionic liquids were measured at several temperatures in the MHz region, and the results are compared with the intermediate scattering functions determined by neutron spin echo spectroscopy.

Development of new neutron spin echo spectrometer based on neutron spin interferometry

2002 ◽  
Vol 311 (1-2) ◽  
pp. 102-105 ◽  
Author(s):  
S Tasaki ◽  
T Ebisawa ◽  
M Hino ◽  
T Kawai ◽  
D Yamazaki ◽  
...  
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo

HMI holds workshop on neutron spin echo spectroscopy

Neutron News ◽  
2001 ◽  
Vol 12 (2) ◽  
pp. 4-5
Author(s):  
Thomas Gutberlet ◽  
Catherine Pappas
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo

Proton Dynamics in Hydrated BaZr0.9M0.1O2.95 (M = Y and Sc) Investigated with Neutron Spin–Echo

2016 ◽  
Vol 120 (26) ◽  
pp. 13963-13969 ◽  
Author(s):  
Daria Noferini ◽  
Michael M. Koza ◽  
Peter Fouquet ◽  
Gøran J. Nilsen ◽  
Moureen C. Kemei ◽  
...  
Keyword(s):  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo ◽  
Proton Dynamics

scholarly journals Bending elastic properties of a block copolymer-rich lamellar phase doped by a surfactant: a neutron spin-echo study

Soft Matter ◽  
2014 ◽  
Vol 10 (36) ◽  
pp. 6926-6930 ◽  
Author(s):  
H. Egger ◽  
G. H. Findenegg ◽  
O. Holderer ◽  
R. Biehl ◽  
M. Monkenbusch ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Elastic Properties ◽  
Spin Echo ◽  
Lamellar Phase ◽  
Neutron Spin ◽  
Neutron Spin Echo

Measurement of Vortex Motion in a Type-II Superconductor: A Novel Use of the Neutron Spin-Echo Technique

2000 ◽  
Vol 85 (16) ◽  
pp. 3488-3491 ◽  
Author(s):  
E. M. Forgan ◽  
P. G. Kealey ◽  
S. T. Johnson ◽  
A. Pautrat ◽  
Ch. Simon ◽  
...  
Keyword(s):  
Spin Echo ◽  
Vortex Motion ◽  
Neutron Spin ◽  
Type Ii ◽  
Neutron Spin Echo ◽  
Type Ii Superconductor ◽  
Spin Echo Technique
Sign in / Sign up

Export Citation Format

Share Document