PHOTOSTABILIZATION OF PVC BY INORGANIC COMPLEXES: PHOTOSTABILIZATION OF PVC BY INORGANIC COMPLEXES - Couverture souple

Yousif, Emad

 
9783843365260: PHOTOSTABILIZATION OF PVC BY INORGANIC COMPLEXES: PHOTOSTABILIZATION OF PVC BY INORGANIC COMPLEXES
Couverture souple
ISBN 10 : 3843365261 ISBN 13 : 9783843365260
Editeur : LAP LAMBERT Academic Publishing, 2010

Synopsis

The work described in this thesis, 2-thioacetic acid benzothiazole chelate complexes. Infrared, ultraviolet?visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption? conductivity measurement 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. The light of wavelength 313 nm. 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. 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.

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Présentation de l'éditeur

The work described in this thesis, 2-thioacetic acid benzothiazole chelate complexes. Infrared, ultraviolet?visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption? conductivity measurement 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. The light of wavelength 313 nm. 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. 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.

Biographie de l'auteur

Name: Emad Yousif Nationality: Iraqi. Date of Birth: October 10, 1971. Marital Status: Single. Language Spoken: Arabic and English Home Address: Baghdad, Iraq. E-mail: emad_yousif@hotmail.com

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
3843365261
ISBN 13 
9783843365260
Reliure
Broché
Nombre de pages
80
Coordonnées du fabricant
non disponible
Personne responsable
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