Special Issue "Polymer Rheology: Fundamentals and Applications"
Deadline for manuscript submissions: 31 August 2020.
Interests: mechanics of polymers; rheology of polymer melts and solutions; colloid; multicomponent compositions; nanocomposites; polymer technology and pocessing
Traditionally, rheology as a branch of mechanics has been directed towards understanding the interrelationships between stresses, strains, and their rates. The transition to polymer objects has introduced into consideration the presence in materials of long flexible macromolecules, which insert novel features in rheology, interconnected with polymer physics: configurations and conformations of macromolecules, long relaxation times and their spectra, high elastic deformations, memory effects, and so on. A lot of constitutive rheological equations have been developed, which allow for the prediction of basic rheological behavior of polymers. However, the appearance of novel polymers with macromolecules of complex shapes, including stiff-chain configuration; multicomponent compositions, such as polymer solutions and blends; as well as composites and nanocomposites based on polymer matrices, has led to the development of new rheological approaches to describe their behavior correctly.
However, with the onset of “plastic area” and such processing methods as extrusion, injection molding, fibers, and films spinning, a rheological description of polymer melts and solutions has become obligatory for the efficient production of polymer articles. In addition to classical methods of rotational and capillary shear rheology, the uniaxial and biaxial extension, squeezing, and superposition of different kinds of strains has received an additional impulse to development. Much more attention has been devoted to polymer solutions, based on such polymers as cellulose, polyacrylonitrile, and polyvinylalcohole, which have become a source of textile and technical fibers, as well as polylactide, polyglycolide, and other biocompatible and biodegradable fibers and nanofibers for medical applications.
Thus, polymer rheology has a dual meaning in polymer science: fundamental and applied. Both these inputs will be considered in the coming Issue.
Dr. Valery Kulichikhin
Dr. Alex Malkin
- Rheology of polymer melts and solutions
- Biocompatible polymers
- Liquid crystalline polymers
- Polymer processing
- Composites and nanocomposites