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Simulations Of Instability In Fiber Spinning Of Polymers, Arkadii Leonov
Simulations Of Instability In Fiber Spinning Of Polymers, Arkadii Leonov
Arkady I. Leonov
No abstract provided.
A Model Of Weak Viscoelastic Nematodynamics, Arkadii Leonov
A Model Of Weak Viscoelastic Nematodynamics, Arkadii Leonov
Arkady I. Leonov
No abstract provided.
Evaluating Tackiness Of Polymer Containing Lubricants By Open Siphon Method: Experiments, Theory And Observations, Arkadii Leonov
Evaluating Tackiness Of Polymer Containing Lubricants By Open Siphon Method: Experiments, Theory And Observations, Arkadii Leonov
Arkady I. Leonov
No abstract provided.
A Hybrid Model Of Rubber Elasticity In Simple Extension, Arkadii Leonov
A Hybrid Model Of Rubber Elasticity In Simple Extension, Arkadii Leonov
Arkady I. Leonov
A thermodynamically related model is developed for describing elastic rubber-like behavior of amorphous and crystallizing polymers and demonstrated on example of simple extension. Both the “entropic” and “energetic” motions of polymer chains that contribute in macroscopic elastic deformation are taken into account. The model displays a continuous transition from entropy to energetic elasticity, without common singularity caused by finite extensibility of polymer chains. A multi-scale molecular approach, based on recent literature concepts has been employed for evaluations of continuum parameters. For crystallizing polymers, a simple model is developed for the stress-induced crystallization, which describes the stress reinforcement caused by the …
Algebraic Theory Of Linear Viscoelastic Nematodynamics, Arkadii Leonov
Algebraic Theory Of Linear Viscoelastic Nematodynamics, Arkadii Leonov
Arkady I. Leonov
This second part of paper develops a theory of linear viscoelastic nematodynamics applicable to LCP. The viscous and elastic nematic components in theory are described by using the LEP approach for viscous nematics and de Gennes free energy for weakly elastic nematic elastomers. The case of applied external magnetic field exemplifies the occurrence of non-symmetric stresses. In spite of multi- (10) parametric character of the theory, the use of nematic operators presents it in an elegant form. When the magnetic field is absent, the theory is simplified for symmetric case with 6 parameters, and takes an extremely simple, 2-parametric form …
Comparative Rheological Studies Of Polyamide-6 And Its Low Loaded Nanocomposite Based On Layered Silicates, Arkadii Leonov
Comparative Rheological Studies Of Polyamide-6 And Its Low Loaded Nanocomposite Based On Layered Silicates, Arkadii Leonov
Arkady I. Leonov
We study some rheological properties for polyamide-6 (PA-6) and a low concentrated clay nanocomposite melt based on polyamide-6 and montmorillonite. Simple shear experiments, carried out for both the neat system and nanocomposite at two different temperatures, include start up shear flows, stress relaxation after cessation of steady flow and oscillatory shear. The dynamic data for the neat PA-6 matrix differ markedly from that of the nanocomposite system, even if it has very low nanofiller concentration. Thermal stability of the PA-6 matrix imposed many restrictions on rheological studies of our systems. Therefore an experimental window was established via rheological and thermal …
General Analysis Of Linear Nematic Elasticity, Arkadii Leonov
General Analysis Of Linear Nematic Elasticity, Arkadii Leonov
Arkady I. Leonov
No abstract provided.
Damage Of Cross-Linked Rubbers As The Scission Of Polymer Chains: Modeling And Tensile Experiments,, Arkadii Leonov
Damage Of Cross-Linked Rubbers As The Scission Of Polymer Chains: Modeling And Tensile Experiments,, Arkadii Leonov
Arkady I. Leonov
No abstract provided.
Modeling Reaction Injection Molding Process Of Phenol-Formaldehyde Resin Filled With Wood Dust, Arkadii Leonov
Modeling Reaction Injection Molding Process Of Phenol-Formaldehyde Resin Filled With Wood Dust, Arkadii Leonov
Arkady I. Leonov
No abstract provided.