Trivalent and hexavalent chromium oxides have been examined by time-of-flight laser microprobe mass spectrometry and Fourier transform ion cyclotron resonance mass spectrometry (FTICRMS). The positive-ion spectra show a strong correlation with the valency of chromium in the oxide. Thus, the positive
โฆ LIBER โฆ
Surface oxidation of styrene butadiene copolymers: Study by laser ablation and secondary ion mass spectrometry
โ Scribed by D. Ruch; C. Boes; R. Zimmer; H.-N. Migeon; J. F. Muller
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 159 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0021-8995
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Using the wet chemistry method, the surface of poly(aryl ether ether ketone) (PEEK) รlm was selectively modiรed to produce PEEK-OH, PEEK-COOH, PEEK-glutamine, and samples displaying, PEEK-NH 2 PEEK-SO 3 H respectively, hydroxyl, carboxyl, amino acid, amine and sulphonyl functions. All the samples we