Abstract
The rheological properties of polyethylene/starch blends compatibilized with ethylene–ethyl acrylate copolymer (EEA) were investigated at different temperatures and shear rates. According to the Fourier transform infrared spectroscopy (FT-IR) data, the application of EEA as a compatibilizer did not lead to the significant change in the blends’ band spectra because the concentration of acrylate groups (and consequently that of carbonyl groups) in the blends was low and the degree of hydrogen bonding was small enough. The rheological properties of blends showed that the melts of the blends were pseudoplastic materials. Viscosity of melt for all blends increased with an increase in both EEA and starch content. Power law index measurements showed that the n value increased and was less than one and the K value decreased with the increase in EEA content. Blends with higher content of starch had the lowest value of activation energy (Ea) and the sensitivity of blends to temperature decreased with an increase in starch content.
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