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Effect of Molecular Structure on Rheological Behavior of Nearly Monodisperse H-Shaped Polybutadienes.
- Source :
- AIP Conference Proceedings; 7/7/2008, Vol. 1027 Issue 1, p430-432, 3p, 2 Charts, 2 Graphs
- Publication Year :
- 2008
-
Abstract
- Nearly monodisperse H-shaped Polybutadiene (PBD) with high 1,4 microstructure (∼90%) were synthesized by a novel synthesis strategy of living anionic polymerization. Linear viscoelastic properties over a broad frequency range of a linear PBD and an H-shaped PBD were studied by frequency sweep and creep/recovery experiments. The dynamic moduli of all samples were found to obey the time-temperature superposition. Primary attention was given to properties that depend on chain microstructure: the plateau modulus Q<subscript>N</subscript><superscript>0</superscript>, the steady state compliance J<subscript>s</subscript><superscript>0</superscript>, and the horizontal and vertical temperature shift factors for the frequency and modulus, a<subscript>T</subscript> and b<subscript>T</subscript>. The data are compared with the predictions of a hierarchical model developed by Larson. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 1027
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 33183848
- Full Text :
- https://doi.org/10.1063/1.2964718