Effects of molecular weight distribution and long-chain branching on the viscoelastic properties of high- and low-density polyethylene melts
β Scribed by Chang Dae Han; Carlos A. Villamizar
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 901 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
Studies of the rheological properties of fractions of linear and branched polyethylenes have shown that the melt recovery of linear polyethylene fractions is very small and independent of molecular weight over a wide range. Fractions containing high degrees of long-chain branching, on the other hand
## Abstract An earlier model relating the variation of the steadyβshear melt viscosity of highβdensity polyethylene to the molecular weight distribution is applied toward predicting the steadyβshear elastic compliance, the first normal stress difference, and relaxation spectrum as a function of she