2005
DOI: 10.1063/1.1863173
|View full text |Cite
|
Sign up to set email alerts
|

Effect of chemical structure on the isobaric and isochoric fragility in polychlorinated biphenyls

Abstract: Pressure-volume-temperature data, along with dielectric relaxation measurements, are reported for a series of polychlorinated biphenyls (PCB), differing in the number of chlorine atoms on their phenyl rings. Analysis of the results reveals that with increasing chlorine content, the relaxation times of the PCB become governed to a greater degree by density rho relative to the effect of temperature T. This result is consistent with the respective magnitudes of the scaling exponent gamma yielding superpositioning… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

1
31
0
1

Year Published

2005
2005
2014
2014

Publication Types

Select...
6
1
1

Relationship

3
5

Authors

Journals

citations
Cited by 37 publications
(33 citation statements)
references
References 91 publications
1
31
0
1
Order By: Relevance
“…We analyzed the T and V dependences of the dielectric relaxation time for 14 materials, for which τ(T,P) and specific volumes (and thus the equation of state) have been reported; these materials were: poly(phenyl glycidyl ether)-co-formaldehyde (PPGE) [12], 1,1'-bis(p-methoxyphenyl)cyclohexane (BMPC) and 1,1'-di(4-methoxy-5-methylphenyl)cyclohexane (BMMPC) [13], salol [14], 1,2 polybutadiene (12PB) [15], polymethylphenylsiloxane (PMPS) and polymethyltolylsiloxane (PMTS) [16], phenylphthalein-dimethylether (PDE) [17], cresolphthalein-dimethylether (KDE) [18,19], polychlorinated biphenyls (PCB42 and PCB54) [20], propylene carbonate (PC) [21], polyvinylmethylether (PVME) [22], polyvinylacetate (PVAc) [23]. The original measurements (except for PVAc) were carried out either at the Naval Research Laboratory or Silesian University in Poland.…”
Section: Ii-results and Discussionmentioning
confidence: 99%
“…We analyzed the T and V dependences of the dielectric relaxation time for 14 materials, for which τ(T,P) and specific volumes (and thus the equation of state) have been reported; these materials were: poly(phenyl glycidyl ether)-co-formaldehyde (PPGE) [12], 1,1'-bis(p-methoxyphenyl)cyclohexane (BMPC) and 1,1'-di(4-methoxy-5-methylphenyl)cyclohexane (BMMPC) [13], salol [14], 1,2 polybutadiene (12PB) [15], polymethylphenylsiloxane (PMPS) and polymethyltolylsiloxane (PMTS) [16], phenylphthalein-dimethylether (PDE) [17], cresolphthalein-dimethylether (KDE) [18,19], polychlorinated biphenyls (PCB42 and PCB54) [20], propylene carbonate (PC) [21], polyvinylmethylether (PVME) [22], polyvinylacetate (PVAc) [23]. The original measurements (except for PVAc) were carried out either at the Naval Research Laboratory or Silesian University in Poland.…”
Section: Ii-results and Discussionmentioning
confidence: 99%
“…The only other requirement is knowledge of the EOS, which is deduced from the same PVT data yielding the scaling exponent. by weight chlorine) [38].…”
Section: Discussionmentioning
confidence: 99%
“…In Figures 2-4 experimental PVT data are plotted for three glass-formers [23,37,38], chosen because they span a range of γ. As can be seen, eq.…”
Section: Pressure Dependence Of T Gmentioning
confidence: 99%
“…[3][4][5][6]The exponent γ of the thermodynamic scaling also provides a measure of the relative importance of the density and temperature in controlling glassy dynamics. Hence, not surprisingly, a large body of experiments [7][8][9][10][11][12][13] and simulations [14][15][16][17][18][19][20] have probed the nature of thermodynamic scaling of glass-forming liquids since the first observation by Tölle et al for orthoterphenyl. [21] The existence of thermodynamic scaling is well established for as diverse materials as van der Waals liquids, polymers, ionic liquids, weakly hydrogen-bonded systems, etc.…”
Section: Introductionmentioning
confidence: 99%