Compatibilization of polymer blends with high-molecular-weight peroxides

2005 ◽  
Vol 96 (1) ◽  
pp. 232-242 ◽  
Author(s):  
S. Voronov ◽  
V. Samaryk ◽  
Y. Roiter ◽  
J. Pionteck ◽  
P. Pötschke ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Polymer Blends ◽  
High Molecular Weight

Determination of the Phase Boundary of High Molecular Weight Polymer Blends

2002 ◽  
Vol 35 (20) ◽  
pp. 7758-7764 ◽  
Author(s):  
A. A. Lefebvre ◽  
N. P. Balsara ◽  
J. H. Lee ◽  
C. Vaidyanathan
Keyword(s):  
Molecular Weight ◽  
Polymer Blends ◽  
Phase Boundary ◽  
High Molecular Weight ◽  
High Molecular Weight Polymer ◽  
Molecular Weight Polymer

scholarly journals Study of non-Newtonian polymer blends using large amplitude oscillatory shearing flow

2021 ◽  
Author(s):  
Isameldeen E. Daffallah ◽  
◽  
Abdulwahab S. Almusallam ◽  
Keyword(s):  
Molecular Weight ◽  
Polymer Blends ◽  
High Molecular Weight ◽  
Large Amplitude ◽  
Matrix Phase ◽  
Deformation Condition ◽  
Boger Fluid ◽  
Boger Fluids ◽  
Cv Model ◽  
Droplet Phase

Large amplitude oscillatory shear (LAOS) was performed on non-Newtonian minor phase in Newtonian matrix phase polymer blends as a first step toward understating more complex immiscible polymer blends under high deformation condition. The blend consists polybutadiene (PBD) as the droplet phase and polydimethylsiloxane (PDMS) as the matrix phase. The PBD droplet phase was an elastic “Boger” fluid prepared by dissolving a high-molecular-weight PBD into a low-molecular-weight Newtonian PBD. Different percentages of the high-molecular-weight PBD were used to prepare different types of Boger fluids that resulted in blends with different viscosity ratios from lower than unity, to unity and higher than unity. Furthermore, the LAOS results of the blends were analyzed by using the Fourier Transform (FT) technique. From a theoretical point of view, the constrained volume model (CV-model) for Newtonian components is adapted to the case of a Newtonian matrix phase and non-Newtonian Boger fluid droplet phase by taking into account stresses that arise in the Boger fluids. The adapted model and the Newtonian CV-model were compared to the experimental results of FT-LAOS for checking the predictability of the model against the rheological properties. The adapted model shows some reasonable qualitative and quantitative agreements at high strain amplitude values.

scholarly journals The Features of Rheological and Tribological Behavior of High-Viscosity Polyolefine Compositions Depending on Their Content

2021 ◽  
Vol 15 (4) ◽  
pp. 486-492
Author(s):  
Mykhailo Bratychak Jr ◽  
◽  
Victoria Zemke ◽  
Natalia Chopyk ◽  
◽  
...  
Keyword(s):  
Molecular Weight ◽  
Friction Coefficient ◽  
Injection Molding ◽  
Polymer Blends ◽  
High Molecular Weight ◽  
Tribological Behavior ◽  
High Viscosity ◽  
Energy Costs ◽  
Technological Properties ◽  
Ultra High Molecular Weight

The influence of additive nature as well as its ratio on the rheological, tribological and technological properties of blends based on ultra-high molecular weight polyethylene has been determined. The energy costs impact in the polymer blends processing has been studied. It is shown that the rheological and tribological properties of the samples have a complicated dependence, which is determined by inhomogeneity of the system. The paper takes into consideration the influence of the friction coefficient of material and the viscosity of its melt on energy costs during processing by injection molding or extrusion

Sign in / Sign up

Export Citation Format

Share Document