LLDPE has better tensile impact strength compared with LDPE.
LLDPE using higher α-olefin such as hexane-1 exhibits better strength compared with using butane-1. The lower MFR is, the higher tensile impact strength is.
Mechanical Properties of LLDPE
Mechanical properties of LLDPE are affected by basic properties such as molecular weight, density. Using higher α-olefin comonomer such as hexene-1, LLDPE has better mechanical performance in comparison with using butane-1 comonomer.
(Relationship between MFR and tensile impact strength)
(Relationship between density and tear strength)
LLDPE with longer branches such as iso-hexene as comonomer has better tear strength. The lower density is, the better tear strength is.