The shear storage modulus has been determined for 0.05, 0.10, and 0.22 g/cc polystyrene bead foams and for the full density polymer a t frequencies from 0.005 to 0.5 Hz a t temperatures from -5' to 84ยฐC. These data are superposed to form master curves of log modulus versus log temperature-reduced fr
Dynamic and steady shear rheological properties of a polydisperse polystyrene
โ Scribed by Jan-Chan Huang; Amitkumar N. Dharia
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 355 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0730-6679
No coin nor oath required. For personal study only.
โฆ Synopsis
rheological model of Carreau is modified with molecular-weight-dependent relaxation times to obtain rheological functions of the polydisperse polystyrene. It is found that five parameters in the model can satisfactorily describe the rheological functions measured.
Non-Newtoniun viscosity, storage, and loss moduli of a polydisperse polystyrene are measured. Molecular weight distribution of the polystyrene is measured by gel permeation chromatography. The
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