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Home  >  Journal list  >  Polymer Journal  >  Vol.3  No.6 (1972)  >  pp.739-748

Polymer Journal
<<Previous article Vol.3  No.6 (1972)   pp.739 - 748 Next article>>

Randomly Branched Polymers. II. Computer Analysis of Gel-Permeation Chromatogram

Michio Kurata1), Hiroyoshi Okamoto1), Masamichi Iwama1), Mitsuo Abe1) and Terutake Homma1)
1) Institute for Chemical Research, Kyoto University

ABSTRACT:  An iterative computer method was proposed for estimating the degree of branching and molecular weight distribution simultaneously from a pair of measurements on intrinsic viscosity and gel-permeation chromatography. The validity of the method as applied to randomly branched polymers was tested by using both fractionated and unfractionated samples of branched polystyrenes. It was experimentally concluded that the average number of branch points per unit molecular weight, λ, can be determined by this method with accuracy of about 15%, and the weight-average molecular weight with accuracy of about 10%.

Branched Polymer/ Polystyrene/ Degree of Chain Branching/ Computer Analysis/ Intrinsic Viscosity/ Gel-Permeation Chromatography/ Molecular Weight Distribution/ Weight-Average Molecular Weight/ Kilb Theory

Published online: March 30, 2006
© Copyright, 2006 by The Society of Polymer Science, Japan



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