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Polymer Mechanics

, Volume 14, Issue 1, pp 95–105 | Cite as

Fluid polymeric systems and their fillings. 2. Polymers characterized by their molecular mass distribution

  • L. A. Faitel'son
Viscous Liquids
  • 27 Downloads

Conclusions

Much progress has been made in recent years toward understanding the mechanism of anomalous viscosity, elasticity, and the regularities of flow of melts, solutions, and filled systems as well as the mechanisms of periodic shear of finite amplitude. Nonlinear phenomenological models of viscoelastic fluids have been developed. The review does not include the group of problems related to combinations of stationary flow and linear periodic deformations, and combinations of linear periodic deformations with nonlinear ones. Nor have we discussed the development of methods for predicting the effects of extrudate swelling, manifestation of viscoelasticity in systems filled with short fibers, and nonisothermal flow conditions. The review does not contain new data obtained by using laser anemometry and double light refraction. The nature of the resistance in a capillary in the range of nonsteady flow has not been discussed either. The progress in these subjects is dealt with in this journal, "Mekhanika Polimerov." Insufficient attention has been paid to the rheology of viscoelastic biological fluids (blood, synovial fluids, etc.) and their substitutes, to the hydrodynamics of these liquids, and to the problem of pulsed flow. Little work has been done on the rheology of mixtures of melts of different polymers. It is also necessary to investigate the deformation of solutions and melts under superhigh velocities and under high pressures as well as the effect of constant and varying magnetic and electromagnetic fields on the mechanical flow characteristics of polymeric fluids.

Keywords

Molecular Mass Refraction Synovial Fluid Biological Fluid Nonsteady Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Plenum Publishing Corporation 1978

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  • L. A. Faitel'son

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