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Determination of Elastic Moduli and Compliances of Viscoelastic Liquids Using the Dynamic Light Scattering Technique
Author(s) -
Wang C. H.
Publication year - 1985
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198500038
Subject(s) - viscoelasticity , chemistry , dynamic light scattering , light scattering , spectral line , elastic modulus , relaxation (psychology) , scattering , moduli , spectroscopy , dynamic modulus , optics , molecular physics , composite material , dynamic mechanical analysis , physics , materials science , nanotechnology , quantum mechanics , organic chemistry , polymer , psychology , social psychology , nanoparticle
Relations between the dynamic light scattering spectrum and the mechanical compliances and longitudinal stress moduli of viscoelastic liquids are provided. The result provides a basis for determination of mechanical relaxation spectra using the dynamic light scattering technique. The method of Computating the longitudinal modulus and the compliance spectra from the time correlation of density fluctuations of poly (propylene glycol), as determined by the photon correlation spectroscopy technique is illustrated.