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Colloid and Polymer Science
Erschienen in: Colloid and Polymer Science 2/2015

01.02.2015 | Original Contribution

Effect of microgel content on the shear and extensional rheology of polyacrylonitrile solution

verfasst von: Xiaofang Liu, Caizhen Zhu, Haixia Dong, Baoming Wang, Ruigang Liu, Ning Zhao, Shuxiang Li, Jian Xu

Erschienen in: Colloid and Polymer Science | Ausgabe 2/2015

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Abstract

Crosslinked polyacrylonitrile (cPAN) particles with uniform size were synthesized through precipitation polymerization. The as-formed cPAN nanoparticles were dispersed in polyacrylonitrile (PAN) solutions to form microgels with various contents, which were used as model to study the influence of the microgels on the shear and extensional rheology of PAN solutions. Flow curves of steady shear viscosity displayed shear thinning and followed time–temperature superposition principle. The dependency of activation energy on the content of cPAN microgels indicated that introduction of microgels weakened the temperature sensitivity of PAN solutions. For extensional rheology study, we utilized the capillary thinning rheometry to characterize the elongation relaxation time and apparent extensional viscosity. Study of filament thinning dynamics with a series of system strains confirmed that the higher content of cPAN microgels the lower extensional strength and worse spinnability of the PAN solution.
Vorheriger Artikel PLA, TPS and PCL binary and ternary blends: structural characterization and time-dependent morphological changes
Nächster Artikel Spectroscopic and structural characterization of pure and FeCl3-containing tri-n-butyl phosphate

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Metadaten
Titel
Effect of microgel content on the shear and extensional rheology of polyacrylonitrile solution
verfasst von
Xiaofang Liu
Caizhen Zhu
Haixia Dong
Baoming Wang
Ruigang Liu
Ning Zhao
Shuxiang Li
Jian Xu
Publikationsdatum
01.02.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Colloid and Polymer Science / Ausgabe 2/2015
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-014-3419-1

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