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Hydrodynamic characteristics of aqueous poly( N ‐vinyl‐2‐pyrrolidone) solutions in the presence of denaturing agents
Author(s) -
Güner Alï
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980228)67:9<1615::aid-app13>3.0.co;2-t
Subject(s) - aqueous solution , polymer chemistry , viscosity , intrinsic viscosity , polymer , vinyl chloride , chemistry , thiourea , polyelectrolyte , materials science , chemical engineering , organic chemistry , composite material , copolymer , engineering
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 25°C and at previously determined theta temperatures. The unperturbed dimension parameter, K 0 , hydrodynamic expansion factor, α η , and unperturbed root‐mean‐square end‐to‐end distance, $\langle r^{2}\rangle^{1/2}_{0}$ , have been evaluated. Viscosimetrically determined characterisics (e.g., intrinsic viscosity, Huggins constants) and the high values of α η and $\langle r^2\rangle^{1/2}_{0}$ can be explained by the interaction between the polymer and denaturing agents. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 67:1615–1618, 1998