Electronic spectral behavior of poly(N-vinyl-2-pyrrolidone) (PVP) was determined in aqueous solutions including a variety of inorganic salts (phosphates, monoand dihydrogen phosphates, sulfates, chlorides, nitrates, bisulfites, and persulfates) for several concentrations. The n 3 \* excitations are
Effect of phenol derivatives on molecular dimensions of poly(N-vinyl-2-pyrrolidone) in aqueous solution
✍ Scribed by Betül Kirci; Ali Güner
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 63 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0021-8995
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The aqueous solution properties of poly ( N-vinyl-2-pyrrolidone ) ( PVP )denaturing agents ( i.e., thiourea, guanidinium chloride, and carbonate ) were studied by viscosity measurements. The polymer dimensions were calculated at 25ЊC and at previously determined theta temperatures. The unperturbed d
## Abstract The minimum concentration (__C~i~__) required for electrospinning polymeric fibers from solutions of mixtures of poly(vinyl phenol) and poly(vinyl pyrrolidone) has been experimentally determined for different blend compositions. This minimum concentration __C~i~__ has its lowest value w