Document Abstract
ANTEC Papers: 2001
0211: Some New Results on Rotational Molding of Metallocene Polyethylenes
D. Annechini, E. Takács and J. Vlachopoulos CAPPA-D, Chemical Engineering, McMaster University, Hamilton, ON, Canada
The objective of this work is to evaluate the suitability of metallocene-catalyzed polyethylenes for rotational molding. The metallocene resins were LLDPE (copolymer of ethylene with hexene) and ethylene-based butene plastomers. The study compares resin properties of metallocene and Ziegler-Natta polyethylenes. Through parallel-plate rheometry, zero-shear viscosity, G' and G" were determined. Melting point, heat of fusion and degree of crystallinity were obtained by DSC experiments, and rate of coalescence of the polymer particles by sintering experiments. Molding tests ran in uniaxial rotomolding machine produced parts for impact resistance and tensile strength measurements.