Morphological and Photodecomposition Rate Constant Study of PVC Films Doped with Sulfadiazine Tin(IV) Complexes

2020 ◽  
Vol 14 (2) ◽  
pp. 88
Author(s):  
Emad Yousif
Keyword(s):  
Radiation Exposure ◽  
Uv Radiation ◽  
Rate Constant ◽  
Experimental Results

This article focus on the calculation of photodecomposition rate constant of PVC films that containing sulfadiazine tin(IV) complexes 1-3 as photostabilzers during UV radiation exposure. This constant calculated as a method for evaluating the efficiency of sulfadiazine tin(IV) complexes 1-3 when used as a PVC photostabilizers after 300 hours of irradiation. The experimental results showed that sulfadiazine tin(IV) complexes 1-3 have reduced the rate of photodecomposition constant value of PVC films significantly with comparison to PVC (blank).

scholarly journals Photochemical Degradation of Sulfadiazine

2013 ◽  
Vol 39 (3) ◽  
pp. 79-91 ◽  
Author(s):  
Natalia Lemańska-Malinowska ◽  
Ewa Felis ◽  
Joanna Surmacz-Górska
Keyword(s):  
Hydrogen Peroxide ◽  
Uv Radiation ◽  
Hydroxyl Radicals ◽  
Rate Constant ◽  
Photochemical Degradation ◽  
Photochemical Processes

Abstract The photochemical degradation of the sulfadiazine (SDZ) was studied. The photochemical processes used in degradation of SDZ were UV and UV/H2O2. In the experiments hydrogen peroxide was applied at different concentrations: 10 mg/dm3 (2.94*10-4 M), 100 mg/dm3 (2.94*10-3 M), 1 g/dm3 (2.94*10-2 M) and 10 g/dm3 (2.94*10-1 M). The concentrations of SDZ during the experiment were controlled by means of HPLC. The best results of sulfadiazine degradation, the 100% removal of the compound, were achieved by photolysis using UV radiation in the presence of 100 mg H2O2/dm3 (2.94*10-3 M). The determined rate constant of sulfadiazine reaction with hydroxyl radicals kOH was equal 1.98*109 M-1s-1.

Extractives relating to heartwood color changes in sugi (Cryptomeria japonica) by a combination of smoke-heating and UV radiation exposure

2003 ◽  
Vol 49 (2) ◽  
pp. 135-139 ◽  
Author(s):  
F. Ishiguri ◽  
S. Maruyama ◽  
K. Takahashi ◽  
Z. Abe ◽  
S. Yokota ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Uv Radiation ◽  
Cryptomeria Japonica ◽  
Color Changes

scholarly journals Youth Access to Artificial UV Radiation Exposure

2009 ◽  
Vol 145 (9) ◽  
Author(s):  
Latrice C. Pichon ◽  
Joni A. Mayer ◽  
Katherine D. Hoerster ◽  
Susan I. Woodruff ◽  
Donald J. Slymen ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Uv Radiation ◽  
Artificial Uv

The implications of solar UV radiation exposure for fish and fisheries

2001 ◽  
Vol 2 (3) ◽  
pp. 250-260 ◽  
Author(s):  
Horacio E Zagarese ◽  
Craig E Williamson
Keyword(s):  
Radiation Exposure ◽  
Uv Radiation ◽  
Solar Uv Radiation ◽  
Solar Uv

The effect of high UV radiation exposure environment on the novel PVC polymers

2019 ◽  
Vol 26 (10) ◽  
pp. 9945-9954 ◽  
Author(s):  
Emad Yousif ◽  
Dina S. Ahmed ◽  
Ahmed A. Ahmed ◽  
Ayad S. Hameed ◽  
Safaa H. Muhamed ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Uv Radiation ◽  
The Novel
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