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Polymer Bulletin
Erschienen in: Polymer Bulletin 11/2016

01.04.2016 | Original Paper

The influence of molecular weight on high shear rate macroscopic rheological properties of polybutene-1 melts through rubber-processing analyzer

verfasst von: Huafeng Shao, Shulei Wang, Aihua He

Erschienen in: Polymer Bulletin | Ausgabe 11/2016

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Abstract

The rheological properties of polybutene-1 with different molecular weight (M w) and polydispersity index (PDI) were studied by means of rubber-processing analyzer (RPA). The studies included strain sweeps, frequency sweeps, temperature sweeps, and stress relaxation tests after a sudden shear displacement. It is observed that the linear viscoelastic regions are basically identical for all the samples with different molecular structure and become smaller slightly with increasing frequency. The melts with larger M w and/or PDI present higher viscoelasticity moduli, melts viscosity, relaxation modulus, and better temperature stability, but lower loss factor and critical shear rate. Furthermore, it is found that crossover frequency decreases with increasing M w and crossover modulus increases with decreasing PDI. In addition, stress relaxation followed by substantial stress growth is observed for the PB-1 melt with larger M w in the stress relaxation measurement.
Vorheriger Artikel Synthesis and characterization of pH-sensitive superabsorbent hydrogels based on sodium alginate-g-poly(acrylic acid-co-acrylamide) obtained via an anionic surfactant micelle templating under microwave irradiation
Nächster Artikel Fabrication of chitosan/MWCNT nanocomposite as a carrier for 5-fluorouracil and a study of the cytotoxicity of 5-fluorouracil encapsulated nanocomposite towards MCF-7

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Metadaten
Titel
The influence of molecular weight on high shear rate macroscopic rheological properties of polybutene-1 melts through rubber-processing analyzer
verfasst von
Huafeng Shao
Shulei Wang
Aihua He
Publikationsdatum
01.04.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 11/2016
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-016-1650-2

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