The role of free volume in the formation of macroradicals during the radiolysis of polymers

1980 ◽  
Vol 22 (8) ◽  
pp. 1921-1929 ◽  
Author(s):  
E.R. Klinshpont ◽  
V.P. Kiryukhin ◽  
V.K. Milinchuk
Keyword(s):  
Free Volume

Blends based on biodegradable poly(caprolactone) with outstanding barrier properties for packaging applications: The role of free volume and interactions

2020 ◽  
Vol 135 ◽  
pp. 109869
Author(s):  
María Ángeles Corres ◽  
Álvaro Mayor ◽  
Ainara Sangroniz ◽  
Javier del Río ◽  
Marian Iriarte ◽  
...  
Keyword(s):  
Free Volume ◽  
Barrier Properties ◽  
Biodegradable Poly ◽  
Poly Caprolactone

Role of free volume in molecular mobility and performance of glassy polymers for corrosion-protective coatings

2020 ◽  
Vol 55 (2) ◽  
pp. 145-158
Author(s):  
A. J. Hill ◽  
A. W. Thornton ◽  
R. H. J. Hannink ◽  
J. D. Moon ◽  
B. D. Freeman
Keyword(s):  
Free Volume ◽  
Molecular Mobility ◽  
Protective Coatings ◽  
Glassy Polymers ◽  
And Performance

Positronium Lifetimes and Gas Permeation in Aquivion® for Fuel Cells

2012 ◽  
Vol 733 ◽  
pp. 61-64 ◽  
Author(s):  
Hamdy F.M. Mohamed ◽  
Yoshinori Kobayashi ◽  
Seiichi Kuroda ◽  
Akihiro Ohira
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Free Volume ◽  
Room Temperature ◽  
Gas Permeability ◽  
Gas Permeation ◽  
Positronium Lifetime ◽  
Different Temperatures ◽  
Linear Correlations

Variations of ortho-positronium (o-Ps) lifetime and gas permeability of the Aquivion® E8705 membrane were studied as functions of temperature under vacuum and relative humidity at room temperature. When the temperature was varied between 0 and 100 °C in vacuum, the hole volume of Aquivion® E8705, deduced from the ortho-positronium lifetime, gradually increased. However, when the relative humidity was changed at room temperature, the hole volume was essentially unchanged. Good linear correlations between the logarithm of permeabilities of O2 and H2 and reciprocal hole volume at different temperatures indicates the importance role of free volume in gas permeation in dry Aquivion® E8705. However, for hydrated Aquivion® E8705 the permeability less depends on hole volume.

Large Free Volume in Maximally Interpenetrating Networks:  The Role of Secondary Building Units Exemplified by Tb2(ADB)3[(CH3)2SO]4·16[(CH3)2SO]1

2000 ◽  
Vol 122 (19) ◽  
pp. 4843-4844 ◽  
Author(s):  
Theresa M. Reineke ◽  
Mohamed Eddaoudi ◽  
David Moler ◽  
M. O'Keeffe ◽  
O. M. Yaghi
Keyword(s):  
Free Volume ◽  
Interpenetrating Networks ◽  
Secondary Building Units
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