Poly(ethyleneimine) and poly(4-vinylpyridine) chains adsorbed on Nucleosil silica have been randomly labeled with nitroxide free radicals. The EPR signal is very sensitive to the molecular Brownian motion of the segments and shows generally at least two different environments: trains adsorbed on the
โฆ LIBER โฆ
Displacement of poly(ethylene oxide) adsorbed on silica by a nonionic surfactant studied by spin labeling
โ Scribed by H. Hommel; H. Van Damme
- Book ID
- 107483246
- Publisher
- Springer-Verlag
- Year
- 2002
- Tongue
- English
- Weight
- 158 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1097-3958
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The adsorption mechanism of silane coupling agent on the colloidal silica surface is studied with spin-labeled silane coupling agent using ESR method. The density of the adsorbed silane molecules was determined to be approximately 1.5-2 molecules per 100 A of the silica surface in 95% ethanol soluti