TY - CHAP

T1 - Intrinsic viscosity of strong linear polyelectrolytes in solutions of low ionic strength and its interpretation.

AU - Pavlov, G.M.

AU - Gubarev, A.S.

PY - 2017

Y1 - 2017

N2 - Evaluation of reliable experimental quantities characterizing the isolated strong polyelectrolyte chain in solution at low ionic strengths is a challenge for researchers working in polymer science and biophysics. A simple method for estimating the intrinsic viscosity as initial slopes of the lnηr and ηsp vs. c dependencies is discussed. Using several examples, we have demonstrated the adequacy of this estimated intrinsic viscosity. The results determined in salt free water solutions for homologous series of sodium poly(styrene-4-sulfonate) in 30-fold range of molar mass, as well as for the polyions with the persistence length of the corresponding bare chains differing 30 times are discussed. The “apparent intrinsic viscosities” of poly(styrene-4- sulfonate) samples at non-zero polymer concentration in salt-free solutions are compared with the directly measured intrinsic viscosities at different ionic strengths.

AB - Evaluation of reliable experimental quantities characterizing the isolated strong polyelectrolyte chain in solution at low ionic strengths is a challenge for researchers working in polymer science and biophysics. A simple method for estimating the intrinsic viscosity as initial slopes of the lnηr and ηsp vs. c dependencies is discussed. Using several examples, we have demonstrated the adequacy of this estimated intrinsic viscosity. The results determined in salt free water solutions for homologous series of sodium poly(styrene-4-sulfonate) in 30-fold range of molar mass, as well as for the polyions with the persistence length of the corresponding bare chains differing 30 times are discussed. The “apparent intrinsic viscosities” of poly(styrene-4- sulfonate) samples at non-zero polymer concentration in salt-free solutions are compared with the directly measured intrinsic viscosities at different ionic strengths.

KW - Dilute solutions of charged polymers, Extremely low ionic strength, Intrinsic viscosity, Molecular hydrodynamic methods, Polyelectrolytes

UR - https://ebooks.benthamscience.com/book/9781681084534/chapter/153826/

U2 - 10.2174/97816810845341170101

DO - 10.2174/97816810845341170101

M3 - Chapter

SP - 433

EP - 460

BT - Advances in Physicochemical Properties of Biopolymers: Part 1

A2 - Masuelli, Martin

A2 - Renard, Denis

PB - Bentham Science Publishers B.V.

ER -