The rheological behavior of ultrahigh molecular weight polyethylene (UHMWPE) semidilute solutions with different solvents has been studied. In a temperature range of 150-185"C, the viscosity of a UHMWPE semidilute solution with paraffin oil as solvent (soln 1) is more temperature-independent and vis
Viscous behavior of ultrahigh molecular weight polyethylene solution
โ Scribed by M.-C. Yang; W.-C. Chen
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 133 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0021-8995
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โฆ Synopsis
The viscous behavior of the decalin solution of ultrahigh molecular weight polyethylene (UHMEPE) was studied. The influence of the concentration of polymer as well as the temperature was investigated. The flow curve can be described by the power-law model. The dependence of the viscosity on the temperature can be described by the Arrhenius-Frenkel-Eyring equation. The dependence of viscosity on the concentration can also be described by a power-law correlation. The addition of aluminum stearate increased the activation energy of flow of the solution. The viscosity of UHM-WPE solution was decreased at lower concentration and increased at higher concentration of UHMWPE.
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The extent of recrystallization of nascent UHMWPE powder is easily measured by calorimetry. Melting and recrystallization of nascent UHMWPE at 140ยฐC can be suppressed by compression molding. Crystals of UHMWPE prepared from dilute solution show a peak melting temperature of 140ยฐC and exhibit crystal
an Road, Shanghai, People's Republic of China ## Synopsis The effect of aluminium stearate on the rheological behavior of ultra-high molecular weight polyethylene (UHMWPE) semidilute solutions with paraffin oil as the solvent has been investigated. Adding aluminium stearate to paraffin oil can pr
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