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Estimation of molecular weight averages from intrinsic viscosity
Author(s) -
Chee K. K.
Publication year - 1985
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.1985.070300403
Subject(s) - extrapolation , intrinsic viscosity , dispersity , molar mass distribution , viscosity , constant (computer programming) , plot (graphics) , thermodynamics , polymer , linear polymer , mathematics , chemistry , materials science , physics , mathematical analysis , polymer chemistry , statistics , organic chemistry , programming language , computer science
The weight‐average molecular weight is estimated by an extrapolation technique based on a linear relation between the viscosity‐average molecular weight M v and a Mark–Houwink–Sakurada constant. This method may also be used to assess the unperturbed dimensions of polymers. If the M v data are known with high accuracy, then the straight line may be stretched to reach the number‐average molecular weight confidently. The slope of the linear plot is associated with the molecular weight distribution and as such can be utilized to compute the polydispersity index.