Self diffusion of polymers in the concentrated regime. Part 2. Self diffusion and tracer-diffusion coefficient and viscosity of concentrated solutions of linear polystyrenes in dibutyl phthalate

1989 ◽  
Vol 22 (9) ◽  
pp. 3793-3798 ◽  
Author(s):  
Norio Nemoto ◽  
Takaharu Kojima ◽  
Tadashi Inoue ◽  
Masahiro Kishine ◽  
Taisei Hirayama ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Dibutyl Phthalate ◽  
Tracer Diffusion ◽  
Tracer Diffusion Coefficient ◽  
Concentrated Solutions ◽  
Self Diffusion

Oxygen nonstoichiometry, defect structure and oxygen diffusion in the double perovskite GdBaCo2O6−δ

2014 ◽  
Vol 43 (42) ◽  
pp. 15937-15943 ◽  
Author(s):  
D. S. Tsvetkov ◽  
M. V. Ananjev ◽  
V. A. Eremin ◽  
A. Yu. Zuev ◽  
E. Kh. Kurumchin
Keyword(s):  
Diffusion Coefficient ◽  
Double Perovskite ◽  
Tracer Diffusion ◽  
Oxygen Nonstoichiometry ◽  
Tracer Diffusion Coefficient ◽  
Self Diffusion ◽  
Polarization Technique ◽  
Dc Polarization ◽  
Oxygen Tracer ◽  
Self Diffusion Coefficient

The values of the oxygen self-diffusion coefficient measured by the dc-polarization technique completely coincide with those of the oxygen tracer diffusion coefficient.

Relation of Tracer Diffusion Coefficient and Solvent Self-Diffusion Coefficient

2002 ◽  
Vol 106 (48) ◽  
pp. 11841-11845 ◽  
Author(s):  
Kyunil Rah ◽  
Sungjong Kwak ◽  
Byung Chan Eu ◽  
Michel Lafleur
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Tracer Diffusion Coefficient ◽  
Self Diffusion ◽  
Self Diffusion Coefficient

scholarly journals Measurement of Tracer Diffusion Coefficient of Sulfur in Solid Calcium Sulfide by IMA

1979 ◽  
Vol 43 (12) ◽  
pp. 1181-1185 ◽  
Author(s):  
Takashi Otowa ◽  
Mutsuhiro Kobayashi ◽  
Kazuhiro S. Goto ◽  
Mayumi Someno
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Calcium Sulfide ◽  
Tracer Diffusion Coefficient

scholarly journals Comparison of Polarographic Diffusion Current with that calculated using Tracer-Diffusion Coefficient

1972 ◽  
Vol 18 (5-6) ◽  
pp. 62-64
Author(s):  
Shigeo SAWADA ◽  
Kuniharu NISHIYAMA ◽  
Katsumi YOKOCHI ◽  
Makoto SUZUKI
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Diffusion Current ◽  
Tracer Diffusion Coefficient

Tracer Diffusion Coefficient

2016 ◽  
Author(s):  
M. Kizilyalli ◽  
J. Corish ◽  
R. Metselaar
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Tracer Diffusion Coefficient

scholarly journals The analysis of intermolecular interactions in concentrated hyaluronan solutions suggest no evidence for chain–chain association

2000 ◽  
Vol 350 (1) ◽  
pp. 329-335 ◽  
Author(s):  
Phillip GRIBBON ◽  
Boon Chin HENG ◽  
Timothy E. HARDINGHAM
Keyword(s):  
Fluorescence Recovery After Photobleaching ◽  
Hydrodynamic Radius ◽  
Hydrophobic Interactions ◽  
Lateral Diffusion ◽  
Tracer Diffusion ◽  
Dilute Solution ◽  
Concentrated Solutions ◽  
Chain Flexibility ◽  
Self Diffusion ◽  
Confocal Fluorescence

Confocal fluorescence recovery after photobleaching (confocal-FRAP) was used to examine the influence of electrolytes (NaCl, KCl, MgCl2, MnCl2 and CaCl2) on the network and hydrodynamic properties of fluoresceinamine-labelled hyaluronan (FA-HA) at concentrations up to 10mg/ml. Self and tracer lateral diffusion coefficients showed that in Ca2+ and Mn2+, FA-HA (830kDa) was more compact than in Mg2+, Na+ or K+. These results were correlated with changes in the hydrodynamic radius of HA, determined by multi-angle laser-light-scattering analysis in dilute solution, which was smaller in CaCl2 (36nm) than in NaCl (43nm). The permeability of more concentrated solutions of HA (< 10mg/ml) to FITC-dextran tracers (2000kDa) was higher in CaCl2. The properties of HA in urea (up to 6M) were investigated to test for hydrophobic interactions and also in ethanol/water (up to 62%, v/v). In both, there was reduced hydrodynamic size and increased permeability to FITC-dextran, suggesting increased chain flexibility, but it did not show the changes predicted if chain–chain association was disrupted by urea, or enhanced by ethanol. Oligosaccharides of HA (HA20–26) also had no effect on the self diffusion of high-molecular-mass FA-HA (830kDa) solutions, or on dextran tracer diffusion, showing that there were no chain–chain interactions open to competition by short-chain segments. The results suggest that the effects of electrolytes and solvent are determined primarily by their effect on HA chain flexibility, with no evidence for association between chain segments contributing significantly to the major properties.

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