Linear Low-Density Polyethylene (LLDPE)
LLDPE is produced by polymerization of ethylene (or ethane monomer) with 1-butene and smaller amounts of 1-hexene and 1-octene, using Ziegler-Natta or metallocene catalysts. It is structurally similar to LDPE.
The structure of LLDPE has a linear backbone with short, uniform branches (unlike longer branches of LDPE). These short branches are able slide against each other upon elongation without becoming entangled like LPDE.
In the present-day scenario, linear has been quite successful in replacing Low Density Polyethylene.
Properties of LLDPE
- Very flexible with high impact strength
- Translucent and natural milky color
- Excellent for mild and strong buffers, good chemical resistance
- Good water vapor and alcohol barrier properties
- Good stress crack and impact resistance
Applications of LLDPE: Suitable for a variety of film application such as general-purpose film, stretch film, garment packaging, agricultural film, etc.