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Determination of intrinsic viscosity by single specific viscosity measurement
Author(s) -
Rao M. V. Ram Mohan,
Yaseen M.
Publication year - 1986
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/app.1986.070310811
Subject(s) - viscosity , alkyd , intrinsic viscosity , relative viscosity , thermodynamics , single point , materials science , point (geometry) , polymer , reduced viscosity , chemistry , organic chemistry , mathematics , physics , mathematical analysis , limit (mathematics) , geometry , coating
Single point determination of intrinsic viscosity saves considerable amount of time, effort and materials. Quite a few equations are available in the literature which require relative viscosity of the polymer solution at a single concentration for calculation of [η]. A comparative assessment of the applicability of two such equations and that of a proposed one has been made by using reported data as well as the practical data on viscosity of alkyd solutions in different solvents. It is inferred from the findings that, for good results from single point methods, the concentration should not be the sole criterion, as suggested by earlier workers; η sp may also be considered as one of the criteria. The single point technique is found to be applicable to alkyd solutions in different solvents.