The Morphology and Performance of Poly(Vinyl Chloride) Containing Melamine Schiff Bases against Ultraviolet Light.
Schiff bases
carbonyl group index
melamine
photostabilization
poly(vinyl chloride)
ultraviolet irradiation
weight loss
Journal
Molecules (Basel, Switzerland)
ISSN: 1420-3049
Titre abrégé: Molecules
Pays: Switzerland
ID NLM: 100964009
Informations de publication
Date de publication:
22 Feb 2019
22 Feb 2019
Historique:
received:
10
02
2019
revised:
20
02
2019
accepted:
21
02
2019
entrez:
1
3
2019
pubmed:
1
3
2019
medline:
14
6
2019
Statut:
epublish
Résumé
Five Schiff bases derived from melamine have been used as efficient additives to reduce the process of photodegradation of poly(vinyl chloride) films. The performance of Schiff bases has been investigated using various techniques. Poly(vinyl chloride) films containing Schiff bases were irradiated with ultraviolet light and any changes in their infrared spectra, weight, and the viscosity of their average molecular weight were investigated. In addition, the surface morphology of the films was inspected using a light microscope, atomic force microscopy, and a scanning electron micrograph. The additives enhanced the films resistance against irradiation and the polymeric surface was much smoother in the presence of the Schiff bases compared with the blank film. Schiff bases containing an ortho-hydroxyl group on the aryl rings showed the greatest photostabilization effect, which may possibly have been due to the direct absorption of ultraviolet light. This phenomenon seems to involve the transfer of a proton as well as several intersystem crossing processes.
Identifiants
pubmed: 30813367
pii: molecules24040803
doi: 10.3390/molecules24040803
pmc: PMC6413115
pii:
doi:
Substances chimiques
Schiff Bases
0
Triazines
0
Polyvinyl Chloride
9002-86-2
melamine
N3GP2YSD88
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : King Saud University
ID : Deanship of Scientific Research
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