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Poly(vinyl Chloride) Photostabilization in the Presence of Schiff Bases Containing a Thiadiazole Moiety.
Shaalan, Naser; Laftah, Nawres; El-Hiti, Gamal A; Alotaibi, Mohammad Hayal; Muslih, Raad; Ahmed, Dina S; Yousif, Emad.
Afiliação
  • Shaalan N; Department of Chemistry, College of Science for Women, University of Baghdad, Baghdad 10071, Iraq. ndsh1972@gmail.com.
  • Laftah N; Department of Chemistry, College of Science for Women, University of Baghdad, Baghdad 10071, Iraq. nawrw.a200@gmail.com.
  • El-Hiti GA; Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia. gelhiti@ksu.edu.sa.
  • Alotaibi MH; Center of Excellence in Integrated Nano-Systems, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia. mhhalotaibi@kacst.edu.sa.
  • Muslih R; Department of Chemistry, College of Science for Women, University of Baghdad, Baghdad 10071, Iraq. raadmuslihr@gmail.com.
  • Ahmed DS; Department of Chemistry, College of Science, Tikrit University, Tikrit 34001, Iraq. dinasaadi86@gmail.com.
  • Yousif E; Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq. emadayousif@gmail.com.
Molecules ; 23(4)2018 Apr 15.
Article em En | MEDLINE | ID: mdl-29662039
Five Schiff bases containing a thiadiazole moiety have been used as poly(vinyl chloride) photostabilizers at low concentrations. The efficiency of Schiff bases as photostabilizers was investigated using various techniques, for example, the changes in poly(vinyl chloride) infrared spectra, molecular weight, chain scission quantum yield, and surface morphology were monitored upon irradiation with an ultraviolet light. Evidently, all the additives used inhibited poly(vinyl chloride) photodegradation at a significant level. The most efficient Schiff base exhibited a high level of aromaticity and contained a hydroxyl group. It seems possible that such photostabilization could be due to the direct absorption of ultraviolet radiation by the additives. In addition, Schiff bases could act as radical scavengers and proton transfer facilitators to stabilize the polymeric materials.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cloreto de Polivinila / Bases de Schiff / Tiadiazóis Idioma: En Revista: Molecules Assunto da revista: BIOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Iraque

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cloreto de Polivinila / Bases de Schiff / Tiadiazóis Idioma: En Revista: Molecules Assunto da revista: BIOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Iraque