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Nematic phase of rodlike polymers. I. Prediction of transient behavior at high shear rates
- Source :
- Journal of Rheology. 34:1217-1230
- Publication Year :
- 1990
- Publisher :
- Society of Rheology, 1990.
-
Abstract
- The two‐dimensional model introduced in a previous paper to describe the nematic phase of rodlike polymers is used to obtain predictions of transient rheological response at high shear rates. First, the transient behavior of a single domain is considered. It is found that, between the tumbling and nontumbling regimes, an intermediate range of shear rates exists where the director continuously oscillates between two orientations close to the shear direction, a result independently obtained in a recent work by Larson, who has considered the full three‐dimensional case. Polydomain structure, typical of polymeric liquid crystals, is then considered. In this paper, results for this case are given for the nontumbling regime only, whereas the tumbling and oscillating regimes are considered in the next paper.
- Subjects :
- chemistry.chemical_classification
Materials science
Polymeric liquid
business.industry
Mechanical Engineering
Polymer
Mechanics
Condensed Matter Physics
Condensed Matter::Soft Condensed Matter
Optics
Rheology
Shear (geology)
chemistry
Mechanics of Materials
Liquid crystal
General Materials Science
Single domain
business
Subjects
Details
- ISSN :
- 15208516 and 01486055
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Rheology
- Accession number :
- edsair.doi...........771524fd93c8755a4c9b2142029f7b0e