Influence of shearing history on the rheological properties and processability of branched polymers. III. An amorphous long-chain branched polymer

1979 ◽  
Vol 23 (11) ◽  
pp. 3295-3300 ◽  
Author(s):  
Minoru Rokudai ◽  
Tokio Fujiki
Keyword(s):  
Rheological Properties ◽  
Branched Polymers ◽  
Branched Polymer ◽  
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.

Rheological Properties of Microgel Prepared with Long-Chain Crosslinkers by a Precipitation Polymerization Method

2011 ◽  
Vol 51 (5) ◽  
pp. 880-896 ◽  
Author(s):  
H. Es-Haghi ◽  
H. Bouhendi ◽  
G. Bagheri Marandi ◽  
M. J. Zohurian-Mehr ◽  
K. Kabiri
Keyword(s):  
Rheological Properties ◽  
Precipitation Polymerization ◽  
Polymerization Method ◽  
Long Chain

Effect of salts on local mobility and rheological properties of micelles of new long-chain surfactant

2011 ◽  
Vol 73 (4) ◽  
pp. 453-457 ◽  
Author(s):  
A. M. Vasserman ◽  
M. V. Motyakin ◽  
L. L. Yasina ◽  
V. G. Vasil’ev ◽  
L. Z. Rogovina
Keyword(s):  
Rheological Properties ◽  
Local Mobility ◽  
Long Chain

scholarly journals The MATCHIT Automaton: Exploiting Compartmentalization for the Synthesis of Branched Polymers

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Mathias S. Weyland ◽  
Harold Fellermann ◽  
Maik Hadorn ◽  
Daniel Sorek ◽  
Doron Lancet ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Golgi Apparatus ◽  
Linear Time ◽  
Optimal Path ◽  
Theoretical Framework ◽  
Branched Polymers ◽  
Branched Polymer ◽  
Maximal Yield ◽  
Polymer Reactions ◽  
In Cells

We propose an automaton, a theoretical framework that demonstrates how to improve the yield of the synthesis of branched chemical polymer reactions. This is achieved by separating substeps of the path of synthesis into compartments. We use chemical containers (chemtainers) to carry the substances through a sequence of fixed successive compartments. We describe the automaton in mathematical terms and show how it can be configured automatically in order to synthesize a given branched polymer target. The algorithm we present finds an optimal path of synthesis in linear time. We discuss how the automaton models compartmentalized structures found in cells, such as the endoplasmic reticulum and the Golgi apparatus, and we show how this compartmentalization can be exploited for the synthesis of branched polymers such as oligosaccharides. Lastly, we show examples of artificial branched polymers and discuss how the automaton can be configured to synthesize them with maximal yield.

scholarly journals Rheological properties, oxidative stability and sensory evaluation of enzymatically synthesized medium- and long-chain triacylglycerol-based salad dressings

2008 ◽  
Vol 110 (12) ◽  
pp. 1116-1126 ◽  
Author(s):  
Soo-Peng Koh ◽  
Norlelawati Arifin ◽  
Chin-Ping Tan ◽  
Mohd. Suria Affandi Yusoff ◽  
Kamariah Long ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Rheological Properties ◽  
Sensory Evaluation ◽  
Long Chain
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