Basic Principles of Thermodynamics of Polymer Solutions

2020 ◽  
pp. 1-31
Author(s):  
Yuri S. Lipatov ◽  
Anatoly E. Nesterov
Keyword(s):  
Polymer Solutions ◽  
Basic Principles

scholarly journals Flows of Linear Polymer Solutions and Other Suspensions of Rod-like Particles: Anisotropic Micropolar-Fluid Theory Approach

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3679
Author(s):  
Vladimir Shelukhin
Keyword(s):  
Polymer Solutions ◽  
Linear Polymer ◽  
Theory Approach ◽  
Total Flow ◽  
Total Flow Rate ◽  
Basic Principles ◽  
Micropolar Fluids ◽  
History Of ◽  
Fluid Theory ◽  
Nematic Phases

We formulate equations governing flows of suspensions of rod-like particles. Such suspensions include linear polymer solutions, FD-virus, and worm-like micelles. To take into account the particles that form and their rotation, we treat the suspension as a Cosserat continuum and apply the theory of micropolar fluids. Anisotropy of suspensions is determined through the inclusion of the microinertia tensor in the rheological constitutive equations. We check that the model is consistent with the basic principles of thermodynamics. In addition to anisotropy, the theory also captures gradient banding instability, coexistence of isotropic and nematic phases, sustained temporal oscillations of macroscopic viscosity, shear thinning and hysteresis. For the flow between two planes, we also establish that the total flow rate depends not only on the pressure gradient, but on the history of its variation as well.

Current Issues: Evidence-Based Practice for the Real World: Thoughts on Clinical Education in Communication Disorders

2010 ◽  
Vol 20 (3) ◽  
pp. 100-105 ◽  
Author(s):  
Anne K. Bothe
Keyword(s):  
Clinical Education ◽  
Real World ◽  
Evidence Based Practice ◽  
Communication Disorders ◽  
University Faculty ◽  
Evidence Based ◽  
Speech Language Pathology ◽  
Basic Principles ◽  
The Real ◽  
Language Pathology

This article presents some streamlined and intentionally oversimplified ideas about educating future communication disorders professionals to use some of the most basic principles of evidence-based practice. Working from a popular five-step approach, modifications are suggested that may make the ideas more accessible, and therefore more useful, for university faculty, other supervisors, and future professionals in speech-language pathology, audiology, and related fields.

Scaling approach to dilferential swelling of polymer solutions and gels

1994 ◽  
Vol 4 (10) ◽  
pp. 1677-1685 ◽  
Author(s):  
P. Pekarski ◽  
Y. Rabin ◽  
M. Gottlieb
Keyword(s):  
Polymer Solutions

Hydrodynamics of polymer solutions via two-parameter scaling

1994 ◽  
Vol 4 (8) ◽  
pp. 1299-1310 ◽  
Author(s):  
Ralph H. Colby ◽  
Michael Rubinstein ◽  
Mohamed Daoud
Keyword(s):  
Polymer Solutions ◽  
Two Parameter
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