RADIATION-INDUCED DECOMPOSITION AND POLYMERIZATION OF POLYVINYL ALCOHOL IN AQUEOUS SOLUTIONS

2013 ◽  
Vol 12 (7) ◽  
pp. 1323-1328 ◽  
Author(s):  
Lujun Chen ◽  
Weihua Sun ◽  
Jinping Tian ◽  
Jianlong Wang ◽  
Shijun He
Keyword(s):  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Radiation Induced ◽  
Induced Decomposition

The action of X-rays (200 kV) and γ -rays ( 60 Co) on dilute aqueous solutions of ceric salts

1957 ◽  
Vol 240 (1221) ◽  
pp. 189-205 ◽  
Keyword(s):  
Formic Acid ◽  
Aqueous Solutions ◽  
X Rays ◽  
State Reduction ◽  
Gaseous Products ◽  
Initial Reduction ◽  
Significant Difference ◽  
Radiation Induced ◽  
Dilute Aqueous Solutions ◽  
Induced Decomposition

The radiation-induced decomposition of water by X -rays (200 kV) an γ -rays ( 60 Co) has been investigated by studying the reduction of ceric salts in dilute aqueous solutions under the influence of these radiations. For the elucidation of the mechanism, the ceric reduction yields have been studied under various conditions, i. e. at different acid concentrations, in de-aerated and in oxygenated (1 atm) solutions, in the presence of dissolved hydrogen and with formic acid as an added solute. The initial reduction yields were found to be greater than the steady-state reduction yields, the following values were obtained ( G in molecules/100 eV): for X-rays G (Ce III ) = 3·15 ± 0·10, for γ -rays G (Ce III ) = 2·45 ± 0·08. These yields were the same both in the presence and in the absence of oxygen during irradiation. In the presence of formic acid the reduction yields are increased: for X-rays G (Ce III ) = 8·50 ± 0·10, for γ -rays G (Ce III ) = 8·15 ± 0·10. These yields were found to be independent of the formic acid concentration in the range 0·001 to 0·05M. The yield of the gaseous products (hydrogen and oxygen) from dilute ceric salt solutions, irradiated in vacuo , were found to be: for X-rays G (H 2 ) = 0·57 ± 0·03, G (O 2 ) = 1·07 ± 0·05, for γ -rays G (H 2 ) = 0·40 ± 0·02, G (O 2 ) = 0·84 ± 0·04. A mechanism is proposed on the basis of which the experimental results can be accounted for. It has been possible to draw some definite conclusions about the primary chemical processes in the radiation-induced decomposition of liquid water; a small but significant difference in the yields of the primary chemical products for X-rays and for γ -rays has been clearly established.

Radiation-induced decomposition of cyclotrimethylenetrinitramine in aqueous solutions

2011 ◽  
Vol 45 (2) ◽  
pp. 89-92 ◽  
Author(s):  
I. E. Makarov ◽  
T. P. Zhestkova ◽  
T. N. Zhukova
Keyword(s):  
Aqueous Solutions ◽  
Radiation Induced ◽  
Induced Decomposition

Radiation-induced oxidation of 2-propanol by hydrogen peroxide in aqueous solutions

1970 ◽  
Vol 48 (18) ◽  
pp. 2948-2948
Author(s):  
C. E. Burchill ◽  
I. S. Ginns
Keyword(s):  
Hydrogen Peroxide ◽  
Aqueous Solutions ◽  
Radiation Induced

not available

scholarly journals The Ultrasonic Velocity and Absorption of Aqueous Solutions of Polyvinyl Alcohol

1964 ◽  
Vol 37 (4) ◽  
pp. 559-563 ◽  
Author(s):  
Kiyoshi Arakawa ◽  
Nobuo Takenaka ◽  
Mineo Watase ◽  
Kazunari Kubota
Keyword(s):  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Ultrasonic Velocity

scholarly journals Radiation effects on aqueous solutions of polyvinyl alcohol

1958 ◽  
Vol 31 (122) ◽  
pp. 256-256
Author(s):  
J. Berkowitch ◽  
A. Charlesby ◽  
V. Desreux
Keyword(s):  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Radiation Effects
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