Changes In The Characteristics Of The Free Volume Of Glassy Polymers During Deformation And Relaxation.

1991 ◽  
Vol 227 ◽  
Author(s):  
M.I. Tsapovestsky ◽  
V.K. Lavrentiev ◽  
S.A. Tishin
Keyword(s):  
Dielectric Loss ◽  
Positron Annihilation ◽  
Free Volume ◽  
Small Angle ◽  
Mechanical Tests ◽  
Glassy Polymers ◽  
Volume Relaxation ◽  
X Ray ◽  
X Ray Scattering ◽  
Original Interpretation

ABSTRACTThe behavior of glassy polymers was studied with the aid of mechanical tests on the basis of free volume. Three types of experiments were carried out and interpreted using modern ideas about the structure of free volume. They were: 1. The study of changes in the total free volume occurring as a result of deformation (by measurement of density) 2. The study of micro voids and their changes on deformation using small angle X-ray scattering (SAXS) and positron annihilation 3. The study of mobile regions by the measurement of dielectric loss (using an original interpretation) during deformation. This allows several parts of the total free volume to be distinguished and investigated. A model for the free volume relaxation during deformation is proposed.

Free volume and lamellar structure of poly vinyl alcohol-nanosized BaTiO3 composite: Positron annihilation and small angle X-ray scattering study

2016 ◽  
Vol 84 ◽  
pp. 100-110 ◽  
Author(s):  
Sandeep K. Sharma ◽  
Jyoti Prakash ◽  
Jitendra Bahadur ◽  
Manjulata Sahu ◽  
Subhashish Mazumder ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Free Volume ◽  
Small Angle ◽  
Vinyl Alcohol ◽  
Lamellar Structure ◽  
Poly Vinyl Alcohol ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering

Small-angle x-ray scattering studies of crazed glassy polymers

1983 ◽  
Vol 21 (6) ◽  
pp. 969-982 ◽  
Author(s):  
Paul A. Westbrook ◽  
John F. Fellers ◽  
Robert W. Hendricks ◽  
J. S. Lin
Keyword(s):  
Small Angle ◽  
Glassy Polymers ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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