Effect of γ-irradiation and temperature on the structure of metal-chloride-treated poly(vinyl alcohol)

1990 ◽  
Vol 40 (78) ◽  
pp. 1163-1176 ◽  
Author(s):  
S. M. Rabie ◽  
Nagwa Abdel-Hakeem ◽  
M. A. Moharram
Keyword(s):  
Vinyl Alcohol ◽  
Metal Chloride ◽  
Poly Vinyl Alcohol ◽  
Γ Irradiation ◽  
Structure Of Metal

scholarly journals Radiation Synthesis and Characterization of Poly(Vinyl Alcohol)/ Acrylamide/ TiO2/ SiO2 Nanocomposite for Removal of Metal Ion and Dye From Waste Water

2021 ◽  
Author(s):  
Ahmed Elbarbary ◽  
Yasser H. Gad
Keyword(s):  
Adsorption Capacity ◽  
Vinyl Alcohol ◽  
Metal Ion ◽  
Chemical Properties ◽  
Poly Vinyl Alcohol ◽  
Blue Dye ◽  
High Adsorption ◽  
Γ Irradiation ◽  
Experimental Conditions ◽  
High Adsorption Capacity

Abstract An effective and novel adsorbent of poly(vinyl alcohol)/polyacrylamide/TiO2/SiO2 (PVA-co-AAm/TiO2/SiO2) nanocomposite synthesized by γ-irradiation polymerization of PVA and AAm in presence of TiO2/SiO2 nanoparticles at different irradiation doses (10, 30 and 50 kGy) for removal of Cu(II) ions and basic blue 3 dye from their aqueous solutions. FT-IR, TEM, XRD, SEM, EDS and DLS analyzed the chemical properties of nanocomposites. The nanocomposite prepared at 30 kGy (PVA-co-AAm/TiO2/SiO2-30) shows high swelling of 197.7 (%) and gelation of 93.1 %. The adsorption capacity (mg/g) and removal (%) of basic blue 3 dye and Cu(II) ions onto nanocomposites by varying experimental conditions were investigated. The PVA-co-AAm/TiO2/SiO2-30 showed high adsorption capacity 3 folds rather than PVA-co-AAm. The equilibrium adsorption for basic blue 3 dye and Cu(II) was 123.9 mg/g and 190.3 mg/g with removal of 82.6 and 95.1 %, respectively. The results of the adsorption of dye or metal ions follow the Pseudo-second order adsorption kinetic, fit with the Langmuir isotherm and the adsorption process is endothermic and spontaneous in nature. The results revealed that the PVA-co-AAm/TiO2/SiO2 nanocomposites could be employed as an effectual adsorbent for adsorption of basic blue dye and Cu(II) ions from wastewater with high adsorption capacity and recovery.

Effects of the composition ratio, eosin addition, and γ irradiation on the dielectric properties of poly(vinyl alcohol)/glycogen blends

2008 ◽  
Vol 110 (3) ◽  
pp. 1281-1288 ◽  
Author(s):  
F. H. Abd El-Kader ◽  
S. A. Gaafar ◽  
K. H. Mahmoud ◽  
S. I. Bannan ◽  
M. F. H. Abd El-Kader
Keyword(s):  
Dielectric Properties ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Γ Irradiation ◽  
Composition Ratio

Effect of γ irradiation on poly(vinyl alcohol) and bacterial cellulose composites used as packaging materials

2013 ◽  
Vol 84 ◽  
pp. 200-204 ◽  
Author(s):  
Anicuta Stoica-Guzun ◽  
Marta Stroescu ◽  
Iuliana Jipa ◽  
Loredana Dobre ◽  
Traian Zaharescu
Keyword(s):  
Bacterial Cellulose ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Packaging Materials ◽  
Γ Irradiation ◽  
Cellulose Composites

Effect of initial γ-irradiation on infrared laser ablation of poly(vinyl alcohol) studied by infrared spectroscopy

2020 ◽  
Vol 181 ◽  
pp. 109331
Author(s):  
Sadulla R. Allayarov ◽  
Matthew P. Confer ◽  
David A. Dixon ◽  
Tatyana N. Rudneva ◽  
Leonid A. Kalinin ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Laser Ablation ◽  
Vinyl Alcohol ◽  
Infrared Laser ◽  
Poly Vinyl Alcohol ◽  
Γ Irradiation
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