Effect of vinyl content on the viscoelastic properties of polybutadienes and polyisoprenes — monomeric friction coefficient

The rheological behavior of a series of polybutadienes and polyisoprenes presenting various microstructures has been characterized over a wide range of temperatures. The polybutadienes vary in microstructure from 11% to 84% vinyl content. The viscoelastic coefficients resulting from the time—tempera...

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Bibliographic Details
Published inPolymer (Guilford) Vol. 39; no. 15; pp. 3445 - 3449
Main Authors Klopffer, Marie-Helene, Bokobza, Liliane, Monnerie, Lucien
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.07.1998
Elsevier
Subjects
Applied sciences
elastomer
Exact sciences and technology
monomeric friction coefficient
Organic polymers
Physicochemistry of polymers
Properties and characterization
Rheology and viscoelasticity
viscoelastic properties
elastomer
monomeric friction coefficient
viscoelastic properties
Diene polymer
Shear modulus
Butadiene polymer
Property structure relationship
Experimental study
Microstructure
Isoprene polymer
Rheological properties
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Summary:The rheological behavior of a series of polybutadienes and polyisoprenes presenting various microstructures has been characterized over a wide range of temperatures. The polybutadienes vary in microstructure from 11% to 84% vinyl content. The viscoelastic coefficients resulting from the time—temperature superposition principle were determined. The Rouse theory modified for undiluted polymers was used to calculate the monomeric friction coefficient, ζ0, from the transition zone. We determined that the WLF coefficients are the same, and that ζ0 is a unique function of (T − Tg) independently of chain microstructure.
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(97)10086-6