Abstract
In the present study, blown films of h-LLDPE, LDPE, and their blends were produced using a twin screw extruder. The tear properties of all films were determined in the machine direction (MD) and the transverse direction (TD). On one hand, similar values of the MD tear-resistance for the two virgin polymers, h-LLDPE and LDPE, were measured to be 100 and 120 kN/m, respectively. On the other hand, the TD tear-resistance value of h-LLDPE was 180 kN/m, four times higher than that of LDPE, 45 kN/m. It was observed that small additions of LDPE (5 to 20 wt.%) to h-LLDPE produced blends with better TD tear-resistance films, 400 kN/m. The main reason for this large increase in tear-resistance was attributed to the morphological changes induced by the addition of the LDPE polymer, as shown by SEM, FTIR, and birefringence techniques.
| Original language | English |
|---|---|
| Pages (from-to) | 392-398 |
| Number of pages | 7 |
| Journal | International Polymer Processing |
| Volume | 27 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2012 |
ASJC Scopus subject areas
- General Chemical Engineering
- Polymers and Plastics
- Industrial and Manufacturing Engineering
- Materials Chemistry