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Use of gel-permeation chromatography in the determination of the composition of two-polymer mixtures

✍ Scribed by Jean-Pierre Menin; René Roux

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
866 KB
Volume
64
Category
Article
ISSN
1873-3778

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✦ Synopsis

The possibility of evaluating with acceptable accuracy the composition of a two-polymer mixture that is well separated by gel-permeation chromatography was studied by using mixtures of high-molecular-weight polybutadiene (m, = 4.5 x 105) and low-molecular-weight polyisobutylene (i@, ca, 10~). It was concluded that a satisfactory evaluation of the composition of a polymer mixture can be achieved, provided that the variations of the refractive index with the molecular weight are taken into account for the low-molecular-weight polymer (the polyisobutylene).

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