Physical properties of LLDPE

Type of comonomer Product brand
Butene-1 (C4) NEO-ZEX™
Hexene-1 (C6) Evolue™
4 methylpentene-1
(ISO C6)
ULTZEX™

The physical properties of LLDPE vary as shown in the figures below, depending on the levels of the molecular weight (MFR) and density. As the side chains introduced become longer, strength and low-temperature resistance become higher.

Tensile shear strength and MFR

  • As the side chains become longer, strength increases.
    Furthermore, as MFR decreases (higher molecular weight), tensile shear strength becomes higher.
  • LLDPE has higher tensile shear strength at the same MFR than that of LDPE.

Tensile impact strength and MFR

  • As MFR decreases (higher molecular weight), tensile impact strength increases.
  • LLDPE has higher impact strength at the same MFR than that of LDPE.

Brittle temperature and MFR

  • As MFR decreases (higher molecular weight), brittle temperature decreases.
  • LLDPE is lower in brittle temperature at the same MFR than LDPE.

Olsen rigidity and density

  • As density rises, Olsen rigidity increases.
  • LLDPE is higher in Olsen rigidity at the same density than LDPE.