Thermally Stimulated Discharge Current and Dynamic Mechanical Investigation of Polyisobutylene−Polybutylene Terephthalate Thermoplastic Multiblock Copolymers

Characterization of polyisobutylene (PIB)−polybutylene terephthalate (PBT) multiblock copolymers by thermally stimulated discharge (TSD) current and dynamic mechanical analysis (DMA) methods is described. Both the length of the PIB segments (2200−10000 g/mol), and the overall composition (30−80 wt %...

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Bibliographic Details
Published in:Macromolecules 1999-02, Vol.32 (3), p.814-818
Main Authors: Marossy, Kálmán, Deák, György, Kéki, Sándor, Zsuga, Miklós
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Rheology and viscoelasticity
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Description
Summary:Characterization of polyisobutylene (PIB)−polybutylene terephthalate (PBT) multiblock copolymers by thermally stimulated discharge (TSD) current and dynamic mechanical analysis (DMA) methods is described. Both the length of the PIB segments (2200−10000 g/mol), and the overall composition (30−80 wt %) of the multiblock copolymers were varied. Both methods support the block structure of the multiblock copolymers investigated. Despite the apolar nature of the PIB segments, they proved to be detectable by the TSD method. The relaxation times and the mobility of the chain length were also determined.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma981511x