Abstract
The light-scattering technique of photon correlation spectroscopy is now firmly established as a valuable tool for the study of the structure and dynamics of macromolecules. Over the last 25 years there has been steady development of the technique and a growing, and now extensive, range of applications to polymer systems. The determination of translational and rotational diffusion coefficients and internal molecular flexing provides a means of polymer characterization for molecular weight and molecular weight distributions, giving size and structural information. Study of polymer dynamics in isolated or weakly interacting molecules in dilute solutions, and strongly interacting molecules in semidilute and concentrated solutions, has provided experimental data concurrent with the extensive development of theoretical models of polymers using renormalization group and scaling theories. Photon correlation spectroscopy is also an important technique in the study and characterization of crosslinked and physical gels, solid and melt bulk polymers, colloids, liquid crystals, aspects of polymer phase transitions and polyelectrolytes. As well as the application to synthetic polymers the technique has found broad application to biopolymers; these applications are not addressed here.
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