Photostabilizing efficiency of PVC in the presence of Schiff bases as photostabilizers

Emad Yousif, Ahmed A. Al-Amiery, Abdulhadi Kadihum, Abdul Amir H. Kadhum, Abu Bakar Mohamad

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The photostabilization of polyvinyl chloride (PVC) films by Schiff bases was investigated. Polyvinyl chloride films containing 0.5 wt % Schiff bases were produced using the same casting method as that used for additive-free PVC films from tetrahydrofuran (THF) solvent. The photostabilization activities of these compounds were determined by monitoring the carbonyl, polyene and hydroxyl indices with irradiation time. The changes in viscosity average molecular weight of PVC with irradiation time were also monitored using THF as a solvent. The quantum yield of chain scission (Φcs) for the studied complexes in PVC was estimated to range between 4.72 and 8.99 × 10-8. According to the experimental results, several mechanisms were suggested, depending on the structure of the additive. Ultra violet (UV) absorption, peroxide decomposition and radical scavenging were suggested as the photostabilizing mechanisms.

Original languageEnglish
Pages (from-to)19886-19899
Number of pages14
JournalMolecules
Volume20
Issue number11
DOIs
Publication statusPublished - 4 Nov 2015

Fingerprint

polyvinyl chloride
Schiff Bases
Polyvinyl Chloride
imines
tetrahydrofuran
Irradiation
Polyenes
irradiation
ultraviolet absorption
Scavenging
scavenging
Peroxides
peroxides
Quantum yield
Viscosity
Hydroxyl Radical
cleavage
molecular weight
Casting
Molecular Weight

Keywords

  • Photochemistry
  • Photostabilizer
  • Polyvinyl chloride (PVC)
  • UV absorber
  • UV-Vis spectroscopy

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Photostabilizing efficiency of PVC in the presence of Schiff bases as photostabilizers. / Yousif, Emad; Al-Amiery, Ahmed A.; Kadihum, Abdulhadi; Kadhum, Abdul Amir H.; Mohamad, Abu Bakar.

In: Molecules, Vol. 20, No. 11, 04.11.2015, p. 19886-19899.

Research output: Contribution to journalArticle

Yousif, Emad ; Al-Amiery, Ahmed A. ; Kadihum, Abdulhadi ; Kadhum, Abdul Amir H. ; Mohamad, Abu Bakar. / Photostabilizing efficiency of PVC in the presence of Schiff bases as photostabilizers. In: Molecules. 2015 ; Vol. 20, No. 11. pp. 19886-19899.
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