Digitale Medien
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
95 (1991), S. 6124-6135
ISSN:
1089-7690
Quelle:
AIP Digital Archive
Thema:
Physik
,
Chemie und Pharmazie
Notizen:
The viscoelastic properties of a concentrated monodisperse latex of polyvinylidene fluoride coated by a monolayer of the surfactant C12E6 has been examined as a function of volume fraction. This system shows solidlike behavior in the linear viscoelastic region. A model is developed to describe number density fluctuations in the sample in terms of the colloid pair interaction energy. This is used to determine the relaxation spectrum and is then compared with experimental data. Excellent agreement is found between the model and the measured stress relaxation response. This model has been compared to published data on polystyrene latex and has also shown excellent agreement. A tracer diffusion coefficient is calculated to illustrate that the dynamic processes controlling relaxation are slow.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.461581
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