Linear rheology of diluted linear, star and model long chain branched polymer melts

2001 ◽  
Vol 40 (5) ◽  
pp. 403-415 ◽  
Author(s):  
D. Robert Daniels ◽  
Thomas C. B. McLeish ◽  
Rama Kant ◽  
Bryan J. Crosby ◽  
Ronald N. Young ◽  
...  
Keyword(s):  
Polymer Melts ◽  
Branched Polymer ◽  
Long Chain

A hierarchical multi-mode MSF model for long-chain branched polymer melts part I: elongational flow

2015 ◽  
Vol 54 (9-10) ◽  
pp. 779-791 ◽  
Author(s):  
Esmaeil Narimissa ◽  
Víctor H. Rolón-Garrido ◽  
Manfred H. Wagner
Keyword(s):  
Polymer Melts ◽  
Elongational Flow ◽  
Branched Polymer ◽  
Multi Mode ◽  
Msf Model ◽  
Long Chain

A hierarchical multi-mode MSF model for long-chain branched polymer melts part II: multiaxial extensional flows

2016 ◽  
Vol 55 (4) ◽  
pp. 327-333 ◽  
Author(s):  
Esmaeil Narimissa ◽  
Víctor H. Rolón-Garrido ◽  
Manfred H. Wagner
Keyword(s):  
Polymer Melts ◽  
Branched Polymer ◽  
Extensional Flows ◽  
Multi Mode ◽  
Msf Model ◽  
Long Chain

Modeling the Rheology of Commercial Long Chain Branched Polymer Melts

2003 ◽  
Vol 804 ◽  
Author(s):  
Seung Joon Park ◽  
Ronald G. Larson
Keyword(s):  
Experimental Data ◽  
Hierarchical Model ◽  
Polymer Melts ◽  
Quantitative Agreement ◽  
Branched Polymers ◽  
Linear Polymers ◽  
Branched Polymer ◽  
Long Chain Branching ◽  
Wide Range ◽  
Long Chain

ABSTRACTThe predictions of a general “hierarchical model” for the rheology of general mixtures of linear and branched polymers are compared to experimental data for well-defined long-chain branched polymers. For a wide range of branched polymer melts, which include star-linear blends, H-polymers, and comb polymers, the predictions of the model agree well with experimental data. We apply the hierarchical model to metallocene-catalyzed polyethylenes (mPEs), in which the branched structures are generated by a Monte Carlo method based on the known reaction kinetics. The hierarchical model captures the shape of the curves of viscoelastic moduli vs. frequency of mPEs well and predicts accurately the effect of long chain branching on the linear viscoelastic properties. The quantitative agreement of the hierarchical model prediction with experimental data of well-defined long-chain branched polymers and mPEs shows that information on branching structure could be inferred from rheological measurements on combinatorial sets of mixtures of an unknown branched with different combinations of linear polymers.

scholarly journals Cross-slot extensional rheometry and the steady-state extensional response of long chain branched polymer melts

2011 ◽  
Vol 55 (4) ◽  
pp. 875-900 ◽  
Author(s):  
D. Auhl ◽  
D. M. Hoyle ◽  
D. Hassell ◽  
T. D. Lord ◽  
O. G. Harlen ◽  
...  
Keyword(s):  
Steady State ◽  
Polymer Melts ◽  
Branched Polymer ◽  
Extensional Rheometry ◽  
Long Chain
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