Dynamics of cubic lattice models of polymer chains at high concentrations

1985 ◽  
Vol 18 (7) ◽  
pp. 1430-1435 ◽  
Author(s):  
Charles C. Crabb ◽  
Jeffrey Kovac
Keyword(s):  
Lattice Models ◽  
Polymer Chains ◽  
Cubic Lattice ◽  
High Concentrations

Effect of bead movement rules on the relaxation of cubic lattice models of polymer chains

1983 ◽  
Vol 16 (3) ◽  
pp. 398-403 ◽  
Author(s):  
Mehmet T. Gurler ◽  
Charles C. Crabb ◽  
Deborah M. Dahlin ◽  
Jeffrey Kovac
Keyword(s):  
Lattice Models ◽  
Polymer Chains ◽  
Cubic Lattice ◽  
Movement Rules

Dynamics of Body-Centred-Cubic Lattice Models for Polymer Chains Confined in an Infinite Cylinder.

1992 ◽  
Vol 24 (12) ◽  
pp. 1397-1402 ◽  
Author(s):  
Linxi Zhang ◽  
Agen Xia ◽  
Jianmin Xu
Keyword(s):  
Lattice Models ◽  
Polymer Chains ◽  
Infinite Cylinder ◽  
Cubic Lattice

Role of the crankshaft motion in the dynamics of cubic lattice models of polymer chains

1986 ◽  
Vol 19 (3) ◽  
pp. 860-863 ◽  
Author(s):  
Celeste Stokely ◽  
Charles C. Crabb ◽  
Jeffrey Kovac
Keyword(s):  
Lattice Models ◽  
Polymer Chains ◽  
Cubic Lattice

Normal-coordinate analysis of the dynamics of cubic lattice models of polymer chains

1985 ◽  
Vol 18 (11) ◽  
pp. 2215-2220 ◽  
Author(s):  
Michelle Dial ◽  
Katherine S. Crabb ◽  
Charles C. Crabb ◽  
Jeffrey Kovac
Keyword(s):  
Lattice Models ◽  
Normal Coordinate Analysis ◽  
Polymer Chains ◽  
Normal Coordinate ◽  
Cubic Lattice

Computer simulation of shape relaxation in cubic lattice models of linear polymers

1991 ◽  
Vol 24 (5) ◽  
pp. 1205-1206 ◽  
Author(s):  
Thomas D. Hahn ◽  
E. Todd Ryan ◽  
Jeffrey Kovac
Keyword(s):  
Computer Simulation ◽  
Lattice Models ◽  
Linear Polymers ◽  
Cubic Lattice

Dynamics of lattice models of polymer chains near the Θ point

1990 ◽  
Vol 23 (11) ◽  
pp. 3013-3019 ◽  
Author(s):  
James Patton Downey ◽  
Jeffrey Kovac
Keyword(s):  
Lattice Models ◽  
Polymer Chains ◽  
Θ Point

scholarly journals Memory Effects of Simple Cubic Lattice Models

1971 ◽  
Vol 46 (3) ◽  
pp. 701-713 ◽  
Author(s):  
Toyonori Munakata ◽  
Akira Tsurui
Keyword(s):  
Lattice Models ◽  
Memory Effects ◽  
Cubic Lattice ◽  
Simple Cubic ◽  
Simple Cubic Lattice

Influence of Preparation Method and Molecular parameters on the Rheology of Model PEO/ Laponite Nanocomposites

2011 ◽  
Vol 1312 ◽  
Author(s):  
Jesmy Jose ◽  
Abakar Adam Omar ◽  
Guillaume Brotons ◽  
Jean-François Tassin
Keyword(s):  
Molecular Weight ◽  
Preparation Method ◽  
Low Frequency ◽  
Elastic Solid ◽  
Polymer Chains ◽  
Correlation Peak ◽  
Preparation Methods ◽  
Molecular Weights ◽  
Twin Screw ◽  
High Concentrations

ABSTRACTModel polymer nanocomposites based on geometrically well defined and protected Laponite particles dispersed in Poly(ethylene oxide) were investigated in order to improve the understanding of the filler dispersion effects on rheology by varying two experimental factors, namely preparation method and PEO matrix molecular weight. Preparation methods are divided into a solution dispersion and a melt dispersion by twin screw extrusion. The linear viscoelastic properties of the samples prepared by solution method revealed an elastic solid like behaviour at Laponite weight fractions as low as 0.1%, dramatically lower than the percolation threshold so far reported for such kind of systems. The sample preparation by melt dispersion, although leading to dispersed particles, does not achieve the same levels of modulus as compared to solution prepared mixtures. We propose a qualitative interpretation of this phenomenon, based on the mixture between a liquid and a dispersed phase of rather solid character. Further experiments using small angle X-ray scattering techniques (SAXS) show that the modulus level is not necessarily related to the height of the correlation peak characteristic of the Laponite stacks. However, for samples prepared with varying PEO matrix molecular weight the fraction of Laponite stacks decreases with increasing PEO molecular weight. The rheology master curve analyses show that confinements of polymer chains arising from high concentrations of particles and high molecular weight matrix chains do not impact the level of the low frequency modulus. However, a slower polymer dynamics, as observed for higher molecular weights, leads to an increase of the modulus at low particle loadings.

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