Premium
Application of multimethod procedure for characterization of branched polydisperse polymers
Author(s) -
Dobkowski Zbigniew
Publication year - 1983
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.1983.070281010
Subject(s) - branching (polymer chemistry) , differential scanning calorimetry , viscometer , gel permeation chromatography , polymer , characterization (materials science) , materials science , polymer chemistry , intrinsic viscosity , polycarbonate , thermodynamics , chemistry , polymer science , viscosity , physics , composite material , nanotechnology
The multimethod procedure for characterization of branched polydisperse polymers, including gel permeation chromatography, solution viscometry, melt viscometry, and differential scanning calorimetry, is described. An equation relating the average branching degree g ¯ x and the average number of branch points n̄ bx has been derived and compared with the theoretical Zimm–Stockmayer equation. It has been found that both equations can be consistent for theta solvent and for the branching degree exponent b =1.5. Experimental data are given for trifunctionally branched bisphenol A polycarbonate.