Relaxation Studies in PEO/PMMA Blends
✍ Scribed by Dionísio, Madalena; Fernandes, Anabela C.; Mano, João F.; Correia, Natália T.; Sousa, Rui C.
- Book ID
- 121328939
- Publisher
- American Chemical Society
- Year
- 2000
- Tongue
- English
- Weight
- 303 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0024-9297
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📜 SIMILAR VOLUMES
Xenon has been used as a structural probe of solid poly(ethylene oxide)/ atactic poly(methyl methacrylate) (PEO/PMMA) blends of concentrations 10/90 to 75/25. 129 Xe-NMR spectra at 293 K show significant changes in line width and chemical shift as the blend composition is varied. The 129 Xe spectra
Longitudinal relaxation of proton magnetisation was used to characterize the molecular motions of PEO chains in compatible PEO (hydrogenated)/PMMA (deuterated) blends. Both the temperature and the PEO concentration, f, were varied. A maximum in the spin-lattice relaxation rate was observed and its p