Influence of ionic liquids on mechanical and thermal properties of polyethylene from renewable resources


Polyethylene from renewable resources produced using sugarcane as raw material was modified with phosphonium ionic liquids. Tensile properties and thermal behavior of modified biopolyethylene in air and nitrogen atmosphere were studied. The thermal degradation of ionic liquids and their influence on thermal degradation of polyethylene from renewable resources were studied by thermogravimetric analysis (TGA). In general, modification of biopolyethylene with phosphonium ionic liquids resulted in improvement of tensile properties, i.e., tensile strength and Young’s modulus. Thermal degradation of biopolyethylene modified with phosphonium ILs proceeds in one step in the range of 400–500 °C in nitrogen atmosphere. Modification of polyethylene with trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate ionic liquid resulted in increase in DTGpeaks and T10% temperatures toward higher temperature for modified polyethylene in comparison with unfilled PE sample both in air and nitrogen atmosphere.

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Correspondence to Ewa Rudnik.

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Rudnik, E., Węgrzyn, M., Kukfisz, B. et al. Influence of ionic liquids on mechanical and thermal properties of polyethylene from renewable resources. J Therm Anal Calorim (2021).

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  • Biopolyethylene
  • Renewable resources
  • Ionic liquids
  • Tensile properties
  • Degradation
  • Thermal stability
  • Thermogravimetry