POTENTIOMETRIC DETERMINATION OF THE MOLECULAR-WEIGHT OF POLYMERS


SARAC A., USTAMEHMETOGLU B. , ERBIL C.

POLYMER BULLETIN, vol.32, no.1, pp.91-95, 1994 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 1
  • Publication Date: 1994
  • Doi Number: 10.1007/bf00297419
  • Title of Journal : POLYMER BULLETIN
  • Page Numbers: pp.91-95

Abstract

The determination of acid end-groups of acrylamide and acrylonitrile polymers initiated by cerium (IV)-malonic acid, cerium (IV)-tartaric acid and cerium (IV)-citric acid redox initiators systems was made in aqueous and nonaqueous media potentiometrically. The effect of solvent, titrant and electrode system on the half-neutralization potentials and number-average molecular weights, ($) over bar M(n), were determined potentiometrically and were studied. These ($) over bar M(n) values were compared with those obtained by viscosimetric and conductometric methods.