Rheo-Optical Methods and Their Application to Polymeric Solids

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Abstract
The term “rheo-optics” is a relatively new word in the area of polymer science but it is one which has taken on considerable meaning, particularly to the polymer physicist. The term originated in the laboratory of Prof. R. S. Stein, the pioneer of rheo-optical techniques. The exact definition of this term is, however, not precise but rather is meant to encompass those techniques which depend on the utilization of electromagnetic radiation (optics) in studying the deformation and flow (rheology) of polymers with particular emphasis on polymeric solids. Furthermore, the term generally applies to techniques which are nondestructive in nature. Utilized correctly, these rheo-optical methods allow investigation of the deformation and orientation behavior at both the microstructure level (e.g., unit cell or single chain) as well as that of the superstructure (e.g., spherulite).