Water Mobility in Aqueous Solutions of Macromolecular Pharmaceutical Excipients Measured by Oxygen-17 Nuclear Magnetic Resonance

The dynamics of water molecules associated with water-soluble polymers were studied by 17O-NMR. The observed spin-lattice relaxation time, T1(obs), of water in aqueous solutions of polyethylene glycol (PEG), poly(vinylpyrrolidone) (PVP) and gelatin at polymer concentrations below 0.12 g/g of water c...

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Veröffentlicht in:Chemical & pharmaceutical bulletin 1995/07/15, Vol.43(7), pp.1221-1223
Hauptverfasser: OTSUKA, Tomoko, YOSHIOKA, Sumie, ASO, Yukio, KOJIMA, Shigeo
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Sprache:eng
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