Encyclopedic Dictionary of Polymers

2011 Edition
| Editors: Jan W. Gooch

Linear Low-Density Polyethylene

  • Jan W. Gooch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6247-8_6926

(LLDPE) The original low-density polyethylene (LDPE), produced at high pressure, has a highly branched structure. Using Ziegler-Natta catalysts and low pressure, with a small percentage of 1-butene or other comonomer, one can produce a more linear PE with density between 0.919 and 0.925 g/cm3. LLDPE films have the gloss and clarity of LDPE films, but are stronger, so can be blown thinner to carry design loads. Because of higher melt viscosity, screw modifications are usually necessary for processing LLDPE in extruders designed for LDPE. (Odian GC (2004) Principles of polymerization. Wiley, New York; Physical properties of polymers handbook. Mark JE (ed), Springer, New York, 1996)

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan W. Gooch
    • 1
  1. 1.AtlantaUSA