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The diffusion and sedimentation of polyamide hydrazide solutions

✍ Scribed by M.G. Vitovskaya; P.N. Lavrenko; E.P. Astapenko; O.V. Okatova; V.N. Tsvetkov

Book ID
118965757
Publisher
Elsevier Science
Year
1978
Weight
420 KB
Volume
20
Category
Article
ISSN
0032-3950

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πŸ“œ SIMILAR VOLUMES

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Light-scattering measurements have been carried out Ior 18 samples of polyamide hydrazide (PAH} in dimethylsulphoxide (DMS) with an over 10-fold variation in molecular weights. It was shown that the excluded volume effect in DMS does not appreciably affect the size of PAH molecules. The length of th

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Flow birefringence (FB) in solutions has been investigated for a number of samples of polyamide-hydrazide (PPAH) in dimethylsulphoxide; intrinsic viscosities [r/] of the same solutions have been measured. Characteristic values of FB, It/I, and orientation angles [z/g] of the solutions were determine

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## Abstract Frictional coefficients for dextran in water have been evaluated from (i) self‐diffusion coefficients determined by pulsed‐field‐gradient NMR, and (ii) sedimentation coefficients in concentrated solutions. The results show that these frictional coefficients are only equal at infinite di