New stabilizers for polystyrene based on 2-thioacetic acid benzothiazol complexes

Emad Yousif, Jumat Salimon, Nadia Salih

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The photostabilization of polystyrene (PS) films by 2-thioacetic acid benzothiazol with Sn(II), Cd(II), Ni(II), Zn(II), and Cu(II) complexes was investigated. The PS films containing complexes of concentration 0.5% by weight were produced by the casting method from chloroform solvent. The photostabilization activities of these compounds were determined by monitoring the carbonyl and hydroxyl indices with irradiation time. The changes in viscosimetric average molecular weight of PS with irradiation time were also tracked (using benzene as a solvent). The quantum yield of the chain scission (φ cs) of these complexes in PS films was evaluated and found to range between 3.60 × 10 -6 and 7.78 × 10 -6. The results obtained showed that the rate of photostabilization of PS in the presence of the additive is in the following trend: Ni(L) 2 > Cu(L) 2 > Zn(L) 2 > Cd(L) 2 > Sn(L) 2. According to the experimental results obtained, several mechanisms were suggested depending on the structure of the additive. Among UV absorption, peroxide decomposer and radical scavenger for photostabilizer additive mechanisms were suggested.

Original languageEnglish
Pages (from-to)1922-1927
Number of pages6
JournalJournal of Applied Polymer Science
Volume125
Issue number3
DOIs
Publication statusPublished - 5 Aug 2012

Fingerprint

Polystyrenes
Acids
Irradiation
Peroxides
Quantum yield
Chloroform
Chlorine compounds
Benzene
Hydroxyl Radical
Casting
Molecular weight
thioacetic acid
Monitoring

Keywords

  • photostabilizer
  • PS
  • quantum yield
  • UV light

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

New stabilizers for polystyrene based on 2-thioacetic acid benzothiazol complexes. / Yousif, Emad; Salimon, Jumat; Salih, Nadia.

In: Journal of Applied Polymer Science, Vol. 125, No. 3, 05.08.2012, p. 1922-1927.

Research output: Contribution to journalArticle

Yousif, Emad ; Salimon, Jumat ; Salih, Nadia. / New stabilizers for polystyrene based on 2-thioacetic acid benzothiazol complexes. In: Journal of Applied Polymer Science. 2012 ; Vol. 125, No. 3. pp. 1922-1927.
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