Segmental motions of cis-polyisoprene in the bulk state: interpretation of dielectric relaxation data

1992 ◽  
Vol 25 (2) ◽  
pp. 816-825 ◽  
Author(s):  
I. Bahar ◽  
B. Erman ◽  
F. Kremer ◽  
E. W. Fischer
1976 ◽  
Vol 54 (7) ◽  
pp. 794-799 ◽  
Author(s):  
M. P. Madan

The dielectric relaxation behavior of 2-butanone, 2-pentanone, 2-heptanone, and 3-nonanone in dilute nonpolar solvents, n-heptane, cyclohexane, benzene, and carbon tetrachloride has been studied in the microwave region at a number of temperatures. The relaxation data have been used to estimate the free energy, enthalpy, and entropy of activation for the relaxation mechanism. The values of the relaxation time for those solutions for which there are available known data agree well with other determinations. The results have been discussed in terms of dipole reorientation by intramolecular and overall molecular rotation and compared, wherever possible, with other similar studies on aliphatic molecules.


2003 ◽  
Vol 5 (5) ◽  
pp. 924-928 ◽  
Author(s):  
Stanisław Urban ◽  
Bo Gestblom ◽  
Wojciech Kuczyński ◽  
Sebastian Pawlus ◽  
Albert Würflinger

2009 ◽  
Vol 96 (3) ◽  
pp. 323a
Author(s):  
Paul W. Fenimore ◽  
Guo Chen ◽  
Hans Frauenfelder ◽  
Benjamin H. McMahon ◽  
Jan Swenson ◽  
...  

1969 ◽  
Vol 47 (24) ◽  
pp. 4697-4699 ◽  
Author(s):  
Y. A. Majid ◽  
S. K. Garg ◽  
D. W. Davidson

Dielectric relaxation data and proton magnetic resonance spectra are given for the structure I clathrate hydrate of cyclopropane. Vapor pressures have been measured along the structure I – structure II – gas equilibrium line missing from the recent phase diagram of Hafemann and Miller.


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