Self-diffusion in poly(N -vinyl pyrrolidone) – poly(ethylene glycol) systems
✍ Scribed by R. S. Vartapetian; E. V. Khozina; J. Kärger; D. Geschke; F. Rittig; M. M. Feldstein; A. E. Chalykh
- Book ID
- 106069764
- Publisher
- Springer
- Year
- 2001
- Weight
- 137 KB
- Volume
- 279
- Category
- Article
- ISSN
- 0340-255X
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We have measured the self-diffusion coefficients of a series of oligo-and poly(ethylene glycol)s with molecular weights ranging from 150 to 10,000, in aqueous solutions and gels of poly(vinyl alcohol) (PVA), using the pulsed-gradient spin-echo NMR techniques. The PVA concentrations varied from 0 to
## Abstract Miscibility and mutual diffusion between poly(__N__‐vinylpyrrolidone) (PVP) and short‐chain poly(ethylene glycol)s (PEGs) of different molecular weight were studied by optical wedge microinterferometry (WMI). The PVP __M__~n~ varied from 1 300 to 360 000 g · mol^−1^, whereas that of PEG