Structure Evolution in Amylopectin/Ethylene Glycol Mixtures by H-bond Formation and Phase Separation Studied with Dielectric Relaxation Spectroscopy

2001 ◽  
Vol 105 (24) ◽  
pp. 5630-5636 ◽  
Author(s):  
A. L. M. Smits ◽  
M. Wübbenhorst ◽  
P. H. Kruiskamp ◽  
J. J. G. van Soest ◽  
J. F. G. Vliegenthart ◽  
...  
Keyword(s):  
Phase Separation ◽  
Ethylene Glycol ◽  
Dielectric Relaxation ◽  
Bond Formation ◽  
Structure Evolution ◽  
Dielectric Relaxation Spectroscopy

scholarly journals Molecular dynamics in polymer networks containing caprolactone and ethylene glycol moieties studied by dielectric relaxation spectroscopy

2014 ◽  
Vol 404 ◽  
pp. 109-115 ◽  
Author(s):  
R. Sabater i Serra ◽  
J.L. Escobar Ivirico ◽  
F. Romero Colomer ◽  
A. Andrio Balado ◽  
J.L. Gómez Ribelles
Keyword(s):  
Molecular Dynamics ◽  
Ethylene Glycol ◽  
Dielectric Relaxation ◽  
Polymer Networks ◽  
Dielectric Relaxation Spectroscopy

scholarly journals Studies of Polymer Solvation by Dielectric Relaxation Spectroscopy III: Polyvinyl Pyrrolidone in N-Methyl-2-Pyrrolidone, Ethanediol, Methanol, and Water

1990 ◽  
Vol 45 (2) ◽  
pp. 126-134
Author(s):  
E. Dachwitz
Keyword(s):  
Dielectric Relaxation ◽  
Chain Length ◽  
Molar Mass ◽  
Polyvinyl Pyrrolidone ◽  
Dielectric Relaxation Spectroscopy ◽  
Length Effect ◽  
Repeat Units ◽  
Solvent Model ◽  
Spectral Components ◽  
High Concentrations

AbstractThe permittivity of the title solutions has been measured at frequencies between some MHz and 72 GHz at 20 °C. Polyvinyl pyrrolidone of relative molar mass ranging from 1200 to 360 000 has been used. Referring to the concentration of monomeric repeat units (x = 0.65 maximum) there is no significant chain length effect. The permittivity data are described in terms of discrete Debye type spectral components. Special attention is paid to the contributions ascribable to the solvents, which are discussed with respect to their solvation behaviour. This can be described by a three state solvent model as follows. Besides the "bulk" solvent a further contribution is found in any case which is due to loosely affected (slowed down) solvent. Moreover a part of the solvent appears to be tightly bound to the polymer at high concentrations. All the solvents considered show similar solvation properties, notwithstanding their different tendencies towards selfassociation.

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