Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Frequently Asked Questions
Frequently Asked Questions
Communities & Collections
Communities & Collections
X-ray photoelectron spectroscopy study on the photodegradation of copolyester model compounds
Date
2020-07-01
Author
Arangdad, Kiarash
Yıldırım, Erol
Detwiler, Andrew
Cleven, Curtis D.
Burk, Christopher
Shamey, Renzo
Pasquinelli, Melissa A.
Freeman, Harold
El-Shafei, Ahmed
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
10
views
0
downloads
The photodegradation of irradiated PETG and PCCT model compounds namely Tm-CHDM-Tm and Tm-TMCD-Tm, where Tm refers to the methyl ester of terephthalic acid, CHDM refers to 1, 4-cyclohexanedimethanol, and TMCD refers to tetramethyl-1, 3-cyclobutanediol, was analyzed using X-ray photoelectron spectroscopy. Photodegradation products were characterized based on high resolution O(1s)x-ray photoelectron spectroscopy (XPS) spectra and the spectra of irradiated model compounds showed a decrease in the relative intensity of C-O compared to the C(sic)O peak. The percentage of C(sic)O formation in irradiated model compounds changed in proportion to irradiation time and showed that the model compound containing CHDM was slightly more UV stable than the TMCD based model compound. Photodegradation mechanisms for model compounds were proposed based on XPS spectra. In parallel studies, density functional theory calculations were performed as an approach to predict degradation products, to help interpreting the XPS spectra of model compounds and characterize the reactivity of model compounds.
Subject Keywords
Materials Chemistry
,
General Chemistry
,
Surfaces, Coatings and Films
,
Polymers and Plastics
URI
https://hdl.handle.net/11511/41999
Journal
JOURNAL OF APPLIED POLYMER SCIENCE
DOI
https://doi.org/10.1002/app.49661
Collections
Department of Chemistry, Article