A paramagnetic resonance study of the molecular motions of spin probes dissolved in poly (vinyl acetate)
β Scribed by Jianlin Li; Edward Gelerinter
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 320 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0032-3861
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π SIMILAR VOLUMES
A detailed study has been made of the rotation of the spin probe 4-hydroxy-2,2,6,6tetramethylpiperidine-l-oxyl (TANOL) in the regime of fast motion in poly(isobutylene) using the activation energy; a free volume model of the probe mobility in the condensed phase is described. Results of the applicat
The slow molecular motion of several de&rated and undeuterated spin probes differing in size and shape, embedded in a model glycerol-water matrix, have been studied by double-modulated electron spin resonance (DMESR). The DMESR spectra as a function of temperature reveal two motional regions. From t
There is discussion of the application of reciprocal chromatography to study of the glass transition in polyacrylonitrile, polyvinyl acetate and their copolymers. This study shows one glass transition in PVAc, but three in PAN, in agreement with studies by the i.r.-method. The copolymers indicate a