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A kinetic approach for polymer solution data
Author(s) -
Kim H. T.,
Brodkey Robert S.
Publication year - 1968
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690140114
Subject(s) - thermodynamics , rheology , polymer , range (aeronautics) , constant (computer programming) , shear (geology) , newtonian fluid , kinetic theory , polymer solution , diagram , non newtonian fluid , kinetic energy , materials science , chemistry , statistical physics , mechanics , mathematics , physics , computer science , classical mechanics , statistics , composite material , programming language
Abstract The phenomenological theory previously prsented for describing the rheological properties of non‐Newtonian materials was applied to two polymer solution systems. The basic shear diagram is needed over a wide range of shear rates and polymer concentrations, and such data are not readily available; however, what could be found supported the analysis. In order to confirm the theory further, ten solutions of polymethylmetacrylate in diethyphthalate with concentrations up to 55% were investigated at 40°C. The results indicated that the forward and reverse orders were 1 and 2 respectively and that the two parameters of the theory (a susceptibility to shear term and an equilibrium type of constant) were constant over the range of concentrations investigated. The flow data were reproduced to within a few percent for all solutions, although the errors were large for the very dilute concentration, where experimental difficulties precluded obtaining reliable data. The method allows correlation of polymer solution data over the range from lower to upper Newtonian viscosities and over a wide concentration range.