On the number-average molecular weight of poly(1,4- trans isoprene) determined by conventional GPC

We became aware, in the course of our on-going research, that the number-average molecular weight of poly(1,4- trans isoprene) determined by conventional gel permeation chromatography (GPC) in tetrahydrofuran (THF) using polystyrene standards differs from its true value by a factor 2. As far as we k...

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Bibliographic Details
Published in:Polymer testing 2009-02, Vol.28 (1), p.106-108
Main Authors: Zinck, Philippe, Terrier, Michaël, Mortreux, André, Visseaux, Marc
Format: Article
Language:English
Subjects:
Analysis and structure
Applied sciences
Exact sciences and technology
Mark Houwink
Molecular weight determination
Polyisoprene
Polymer industry, paints, wood
Properties and testing
SEC
Technology of polymers
Testing and control
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Summary:We became aware, in the course of our on-going research, that the number-average molecular weight of poly(1,4- trans isoprene) determined by conventional gel permeation chromatography (GPC) in tetrahydrofuran (THF) using polystyrene standards differs from its true value by a factor 2. As far as we know, the Mark-Houwink coefficients of this polymer in a widespread GPC eluent such as THF have never been determined. We provide in this contribution a simple relationship between the number-average molecular weight of poly(1,4- trans isoprene) determined by GPC in THF using polystyrene standards and its true value.
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2008.09.010