Dielectric Relaxation as an Independent Examination of Relaxation Mechanisms in Entangled Polymers Using the Discrete Slip-Link Model

2012 ◽  
Vol 45 (14) ◽  
pp. 5728-5743 ◽  
Author(s):  
Ekaterina Pilyugina ◽  
Marat Andreev ◽  
Jay D. Schieber
Keyword(s):  
Dielectric Relaxation ◽  
Entangled Polymers ◽  
Link Model

A Slip-Link Model of Branch-Point Motion in Entangled Polymers

2004 ◽  
Vol 37 (21) ◽  
pp. 8160-8166 ◽  
Author(s):  
S. Shanbhag ◽  
R. G. Larson
Keyword(s):  
Branch Point ◽  
Entangled Polymers ◽  
Point Motion ◽  
Link Model

Smoothed particle hydrodynamics simulation of viscoelastic flows with the slip-link model

2016 ◽  
Vol 1 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Hualong Feng ◽  
Marat Andreev ◽  
Ekaterina Pilyugina ◽  
Jay D. Schieber
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
First Principles ◽  
Molecular Model ◽  
Viscoelastic Flows ◽  
Simulation Tool ◽  
Entangled Polymers ◽  
Macroscopic Properties ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Link Model

We propose a simulation tool that can predict the macroscopic properties of entangled polymers during and after processing, using molecular model whose parameters are determined from first principles.

Dielectric Relaxation Studies of Silver Nanoparticles dispersed Liquid Crystal

2015 ◽  
Vol 8 (3) ◽  
pp. 2176-2188 ◽  
Author(s):  
Keisham Nanao Singh
Keyword(s):  
Activation Energy ◽  
Silver Nanoparticles ◽  
Liquid Crystal ◽  
Dielectric Relaxation ◽  
Relaxation Process ◽  
Relaxation Times ◽  
Low Frequency ◽  
Bulk Liquid ◽  
Molecular Rearrangement ◽  
Relaxation Studies

This article reports on the Dielectric Relaxation Studies of two Liquid Crystalline compounds - 7O.4 and 7O.6 - doped with dodecanethiol capped Silver Nanoparticles. The liquid crystal molecules are aligned homeotropically using CTAB. The low frequency relaxation process occurring above 1 MHz is fitted to Cole-Cole formula using the software Dielectric Spectra fit. The effect of the Silver Nanoparticles on the molecular dipole dynamics are discussed in terms of the fitted relaxation times, Cole-Cole distribution parameter and activation energy. The study indicate a local molecular rearrangement of the liquid crystal molecules without affecting the order of the bulk liquid crystal molecules but these local molecules surrounding the Silver Nanoparticles do not contribute to the relaxation process in the studied frequency range. The observed effect on activation energy suggests a change in interaction between the nanoparticles/liquid crystal molecules.

Dielectric Relaxation in Liquid Crystal Phases with Polar Order

2003 ◽  
Vol 297 (1) ◽  
pp. 91-105
Author(s):  
B. Żywucki ◽  
W. Kuczyński ◽  
J. Małecki
Keyword(s):  
Liquid Crystal ◽  
Dielectric Relaxation ◽  
Polar Order ◽  
Crystal Phases ◽  
Liquid Crystal Phases
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