Eur. Phys. J. E 10, 65-68 (2003)
DOI: 10.1140/epje/e2003-00003-4

pH effects in the formation of interpolymer complexes between poly(N-vinylpyrrolidone) and poly(acrylic acid) in aqueous solutions

Z.S. Nurkeeva, G.A. Mun, V.V. Khutoryanskiy, A.B. Bitekenova, A.V. Dubolazov and S.Zh. Esirkegenova

Kazakh National University, Department of Chemical Physics & Macromolecular Chemistry, Karasai Batyra 95, 480012 Almaty, Kazakhstan

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(Received 29 April 2002 and Received in final form 24 June 2002 Published online: 21 January 2003 )

Abstract
The critical pH values for hydrogen-bonded interpolymer complexes of poly(N-vinylpyrrolidone) and poly(acrylic acid) in aqueous solutions were determined. The effect of polymer concentrations, molecular weights and addition of inorganic salts (NaCl and KCl) on the complexation was studied.

PACS
81.05.Lg - Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials.
82.70.Gg - Gels and sols.
83.80.-k - Material type.

© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2003