Use of gel-permeation chromatography in the determination of the composition of two-polymer mixtures |
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Authors: | Jean-Pierre Menin,Ren Roux |
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Affiliation: | Jean-Pierre Menin,René Roux |
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Abstract: | The possibility of evaluating with acceptable accuracy the composition of a two-polymer mixture which is well separated by GPC, was studied by using mixtures of high molecular weight polybutadiene (M?w = 4.5 × 105) and low molecular weight polyiso-butylene (M?n in the range of 103). 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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