| Autor: |
I.V. Yekayeva, S.I. Klenin, G.F. Kolbina, V.P. Shibayev, I.N. Shtennikova, Ye.V. Korneyeva, S.A. Didenko |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Polymer Science U.S.S.R.. 32:41-47 |
| ISSN: |
0032-3950 |
| Popis: |
The hydrodynamic properties—characterisctic viscosities [ν], translational diffusion D and sedimentation S0— of samples and fractions of oxypropyl cellulose have been investigated in a number of solvents. The relations linking the magnitudes [ν], D and S0 with the degree of polymerization have been established. From the data on translational diffusion and viscometry the authors have determined the equilibrium rigidity of the macromolecules: the size of the statistical segment is (210–240) × 10−8cm. The high rigidity of the macromolecules determines the possibility of the formation of the mesophase in solutions and melts of oxypropyl cellulose. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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