Temperature dependence of free volume of polyacrylamide gels studied by positron lifetime measurements

2000 ◽  
Vol 58 (5-6) ◽  
pp. 521-524 ◽  
Author(s):  
Kenji Ito ◽  
Yusuke Ujihira ◽  
Takashi Yamashita ◽  
Kazuyuki Horie
Keyword(s):  
Temperature Dependence ◽  
Free Volume ◽  
Positron Lifetime ◽  
Polyacrylamide Gels ◽  
Lifetime Measurements

scholarly journals POSITRON LIFETIME MEASUREMENTS IN NATURAL RUBBER WITH DIFFERENT FILLERS

2013 ◽  
Vol 22 ◽  
pp. 112-117 ◽  
Author(s):  
A. MANDAL ◽  
S. MUKHERJEE ◽  
S. PAN ◽  
A. SENGUPTA
Keyword(s):  
Natural Rubber ◽  
Positron Annihilation ◽  
Free Volume ◽  
Positron Lifetime ◽  
Amorphous Region ◽  
Filler Concentration ◽  
Lifetime Measurements ◽  
Positron Annihilation Lifetime

Positron annihilation lifetime spectra (PLAS) have been measured for natural rubber polymer with different fillers (Titenium dioxide, Nanosilica and Nanoclay) as a function of filler concentration to investigate how these fillers affect the microstructure of free volume of natural rubber. The lifetime spectra is analyzed by using LT9.0 and the longest lived component(τo-Ps) is attributed to the pick- off annihilation of o-Ps in free volume sites, available mostly in the amorphous region of polymer. On the basis of the τo-Ps values the radii of the free volume holes (Rh) are calculated. The PALS results show that o-Ps lifetime as well as the size of free volume decreases with the increase of filler concentration.

scholarly journals Temperature dependence of free volume distributions in polymers studied by positron lifetime spectroscopy

1993 ◽  
Vol 03 (C4) ◽  
pp. 265-270 ◽  
Author(s):  
J. KRIŠTIAK ◽  
K. KRIŠTIAKOVÁ ◽  
O. ŠAUŠA ◽  
P. BANDŽUCH ◽  
J. BARTOŠ
Keyword(s):  
Temperature Dependence ◽  
Free Volume ◽  
Positron Lifetime ◽  
Positron Lifetime Spectroscopy

Temperature Dependence of the Free Volume in Fluoroelastomers from Positron Lifetime and PVT Experiments

2004 ◽  
Vol 37 (17) ◽  
pp. 6606-6618 ◽  
Author(s):  
Günter Dlubek ◽  
Asmita Sen Gupta ◽  
Jürgen Pionteck ◽  
Reinhard Krause-Rehberg ◽  
Harald Kaspar ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Free Volume ◽  
Positron Lifetime

Characterization of free volume and density gradients of polystyrene surfaces by low-energy positron lifetime measurements

Polymer ◽  
2004 ◽  
Vol 45 (13) ◽  
pp. 4533-4539 ◽  
Author(s):  
John Algers ◽  
Ryoichi Suzuki ◽  
Toshiyuki Ohdaira ◽  
Frans H.J. Maurer
Keyword(s):  
Free Volume ◽  
Positron Lifetime ◽  
Low Energy ◽  
Density Gradients ◽  
Lifetime Measurements

scholarly journals Study of interfaces in polymer-metal oxide films and free-volume hole using low-energy positron lifetime measurements

2019 ◽  
Vol 4 (3) ◽  
pp. 413-419 ◽  
Author(s):  
Aman Deep Acharya ◽  
Bhawna Sarwan ◽  
Ratnesh Sharma ◽  
S.B. Shrivastava ◽  
Manoj Kumar Rathore
Keyword(s):  
Metal Oxide ◽  
Free Volume ◽  
Positron Lifetime ◽  
Oxide Films ◽  
Low Energy ◽  
Metal Oxide Films ◽  
Lifetime Measurements ◽  
Polymer Metal ◽  
Free Volume Hole

The Absolute Free Volume Fraction in Polymers from the Positron Lifetime Measurements

2001 ◽  
Vol 363-365 ◽  
pp. 269-271 ◽  
Author(s):  
Jozef Krištiak ◽  
P. Bandžuch ◽  
O. Šauša ◽  
J. Zrubcová ◽  
Josef Bartoš
Keyword(s):  
Free Volume ◽  
Positron Lifetime ◽  
Volume Fraction ◽  
Lifetime Measurements ◽  
Free Volume Fraction ◽  
The Absolute

Temperature Dependence of Free Volume in Pure and Silica-Filled Poly(dimethyl siloxane) from Positron Lifetime and PVT Experiments

2005 ◽  
Vol 206 (8) ◽  
pp. 827-840 ◽  
Author(s):  
G�nter Dlubek ◽  
Udayan De ◽  
J�rgen Pionteck ◽  
Nikolai Yu. Arutyunov ◽  
Matthias Edelmann ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Free Volume ◽  
Positron Lifetime ◽  
Dimethyl Siloxane

Temperature dependence of the free volume holes in polyhydroxybutyrate biopolymer: A positron lifetime study

2007 ◽  
Vol 4 (10) ◽  
pp. 3907-3911 ◽  
Author(s):  
E. E. Abdel-Hady ◽  
Hamdy F. M. Mohamed ◽  
Somia S. Fareed
Keyword(s):  
Temperature Dependence ◽  
Free Volume ◽  
Positron Lifetime
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