Viscosity Behaviour of Dilute and Moderately Concentrated Solutions. 1. Poly(vinylpyrrolidone) in 2-propanol

Hugo Ayal; Ligia Gargallo; D. Radić

doi:10.1080/00914039308009658

Viscosity Behaviour of Dilute and Moderately Concentrated Solutions. 1. Poly(vinylpyrrolidone) in 2-propanol

Hugo Ayal
, Ligia Gargallo
, D. Radić

Facultad de Ciencia
Pontificia Universidad Católica de Chile

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The zero-shear viscosity of dilute to moderately concentrated poly(vinylpyrrolidone) solutions in 2-propanol were measured at different temperatures in the newtonian flow range. The viscosity data were analyzed in terms of Martin's and Fedor's equations. The viscosity-concentration data were generalized in terms of reduced variables. The relation between the K_Mparameter for the rheological interaction and some characteristics of polymer solutions such as the flexibility of the PVP chain is discussed. The temperature dependence of viscosities was expressed by the Arrhenius-Frenkel-Eyring equation and the activation energy of viscous flow of polymer solutions (ΔGv) was calculated. It was shown that ΔGv increases with concentration and it is independent of the temperature.

Original language	English
Pages (from-to)	47-55
Number of pages	9
Journal	International Journal of Polymeric Materials and Polymeric Biomaterials
Volume	23
Issue number	1-2
DOIs	https://doi.org/10.1080/00914039308009658
State	Published - 1 Dec 1993
Externally published	Yes

Keywords

Zero-shear viscosity master curve Martin’
s constant free energy activation viscous flow

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10.1080/00914039308009658

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title = "Viscosity Behaviour of Dilute and Moderately Concentrated Solutions. 1. Poly(vinylpyrrolidone) in 2-propanol",

abstract = "The zero-shear viscosity of dilute to moderately concentrated poly(vinylpyrrolidone) solutions in 2-propanol were measured at different temperatures in the newtonian flow range. The viscosity data were analyzed in terms of Martin's and Fedor's equations. The viscosity-concentration data were generalized in terms of reduced variables. The relation between the KMparameter for the rheological interaction and some characteristics of polymer solutions such as the flexibility of the PVP chain is discussed. The temperature dependence of viscosities was expressed by the Arrhenius-Frenkel-Eyring equation and the activation energy of viscous flow of polymer solutions (ΔGv) was calculated. It was shown that ΔGv increases with concentration and it is independent of the temperature.",

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author = "Hugo Ayal and Ligia Gargallo and D. Radi{\'c}",

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T1 - Viscosity Behaviour of Dilute and Moderately Concentrated Solutions. 1. Poly(vinylpyrrolidone) in 2-propanol

AU - Ayal, Hugo

AU - Gargallo, Ligia

AU - Radić, D.

PY - 1993/12/1

Y1 - 1993/12/1

N2 - The zero-shear viscosity of dilute to moderately concentrated poly(vinylpyrrolidone) solutions in 2-propanol were measured at different temperatures in the newtonian flow range. The viscosity data were analyzed in terms of Martin's and Fedor's equations. The viscosity-concentration data were generalized in terms of reduced variables. The relation between the KMparameter for the rheological interaction and some characteristics of polymer solutions such as the flexibility of the PVP chain is discussed. The temperature dependence of viscosities was expressed by the Arrhenius-Frenkel-Eyring equation and the activation energy of viscous flow of polymer solutions (ΔGv) was calculated. It was shown that ΔGv increases with concentration and it is independent of the temperature.

AB - The zero-shear viscosity of dilute to moderately concentrated poly(vinylpyrrolidone) solutions in 2-propanol were measured at different temperatures in the newtonian flow range. The viscosity data were analyzed in terms of Martin's and Fedor's equations. The viscosity-concentration data were generalized in terms of reduced variables. The relation between the KMparameter for the rheological interaction and some characteristics of polymer solutions such as the flexibility of the PVP chain is discussed. The temperature dependence of viscosities was expressed by the Arrhenius-Frenkel-Eyring equation and the activation energy of viscous flow of polymer solutions (ΔGv) was calculated. It was shown that ΔGv increases with concentration and it is independent of the temperature.

KW - Zero-shear viscosity master curve Martin’

KW - s constant free energy activation viscous flow

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DO - 10.1080/00914039308009658

M3 - Article

AN - SCOPUS:0027813421

SN - 0091-4037

VL - 23

SP - 47

EP - 55

JO - International Journal of Polymeric Materials and Polymeric Biomaterials

JF - International Journal of Polymeric Materials and Polymeric Biomaterials

IS - 1-2

ER -

Viscosity Behaviour of Dilute and Moderately Concentrated Solutions. 1. Poly(vinylpyrrolidone) in 2-propanol

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Keywords

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