Hadeel adil (5 Ergebnisse)
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Taschenbuch. Zustand: Neu. New stabilizers for PVC based on benzothiazole complexes | Photostabilizing of PVC Films by 2-amino acetate benzothiazole chelate complexes | Hadeel Adil (u. a.) | Taschenbuch | 76 S. | Englisch | 2011 | LAP LAMBERT Academic Publishing | EAN 9783844323580 | Verantwortliche Person für die EU: preigu Gmb…H & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
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Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The work described in this thesis, potasium-2-amino acetate benzothiazole chelate complexes were prepared. Infrared, ultraviolet-visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption conductivity measureme…nt and other physical properties were used to characterize the free ligand and the above chelate complexes. All these compounds were act as stabilizer in PVC films. The rate of photodegradation and photostabilization of PVC film were monitored by measuring the carbonyl, polyene and hydroxyl indices (Ico, Ipo and IoH) values as afunction with irradiation time and ultraviolet-visible spectrophotometry using the concentrations of additive 0.5% wt/wt. It is found that the carbonyl index, polyene index and hydroxyl index values increased with irradiation time, and this increase depend on the type of additives (free ligand and complexes). According to the experimental results obtained several mechanisms were suggested depending on the structure of the additives. Therefore HCl scavenging, UV absorption, peroxide decomposer and radical scavenger for photostabilizer additives were suggested. 76 pp. Englisch.
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Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The work described in this thesis, potasium-2-amino acetate benzothiazole chelate complexes were prepared. Infrared, ultraviolet-visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption conductivity measurement a…nd other physical properties were used to characterize the free ligand and the above chelate complexes. All these compounds were act as stabilizer in PVC films. The rate of photodegradation and photostabilization of PVC film were monitored by measuring the carbonyl, polyene and hydroxyl indices (Ico, Ipo and IoH) values as afunction with irradiation time and ultraviolet-visible spectrophotometry using the concentrations of additive 0.5% wt/wt. It is found that the carbonyl index, polyene index and hydroxyl index values increased with irradiation time, and this increase depend on the type of additives (free ligand and complexes). According to the experimental results obtained several mechanisms were suggested depending on the structure of the additives. Therefore HCl scavenging, UV absorption, peroxide decomposer and radical scavenger for photostabilizer additives were suggested.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 76 pp. Englisch.
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Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The work described in this thesis, potasium-2-amino acetate benzothiazole chelate complexes were prepared. Infrared, ultraviolet-visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption conductivity measurement an…d other physical properties were used to characterize the free ligand and the above chelate complexes. All these compounds were act as stabilizer in PVC films. The rate of photodegradation and photostabilization of PVC film were monitored by measuring the carbonyl, polyene and hydroxyl indices (Ico, Ipo and IoH) values as afunction with irradiation time and ultraviolet-visible spectrophotometry using the concentrations of additive 0.5% wt/wt. It is found that the carbonyl index, polyene index and hydroxyl index values increased with irradiation time, and this increase depend on the type of additives (free ligand and complexes). According to the experimental results obtained several mechanisms were suggested depending on the structure of the additives. Therefore HCl scavenging, UV absorption, peroxide decomposer and radical scavenger for photostabilizer additives were suggested.
