Surface Modification of Polystyrene by Gamma-Radiation
| Autor: | L. S. Hersh, Emmanuel C. Onyiriuka, William Hertl |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Chemistry
010401 analytical chemistry Kinetics Analytical chemistry Chemical modification Infrared spectroscopy 01 natural sciences 0104 chemical sciences 010309 optics chemistry.chemical_compound Attenuated total reflection 0103 physical sciences Surface modification Molecule Irradiation Polystyrene Instrumentation Spectroscopy |
| Zdroj: | Applied Spectroscopy. 44:808-811 |
| ISSN: | 1943-3530 0003-7028 |
| DOI: | 10.1366/0003702904086975 |
| Popis: | The effect of gamma-radiation on the surface chemical properties of polystyrene was studied by ESCA and FT-IR. Gamma-radiation produces surface >C=O and C-O containing functional groups only, and also causes oxidation to depths >10 nm as detected by ESCA. FT-IR spectra showed that below the top few molecular layers ester, acid, and carbonyl groups of various types were present. The α,β-unsaturated carbonyl/acid groups form a higher proportion of the total carbonyls with increasing depth. Surface oxidation follows pseudo-first-order kinetics; the extent of interior oxidation is linear with dose. |
| Databáze: | OpenAIRE |
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