The Effect of PIB Molecular Weight on the Cling Characteristics of Polyethylene-PIB Films for Stretch and Cling Film Applications

G. M. Mcnally (1) , C. M. Small (1) , W. R. Murphy (1) , A. H. Clarke (1)

1 QUB - Queen's University [Belfast]

The effect of molecular weight on the migratory characteristics of polyisobutylene (PIB) additive from the bulk to the surface of a range of monolayer and multilayer extruded polyethylene films has been analyzed by FTIR-ATR and peel cling analysis. Migration rates are shown to be higher for lower molecular weight PIB additive, and cling strength increases as the PIB molecular weight increases.

Mots clés: PIB; LLDPE; cling strength; blends; stretch films; metallocene; Z-N catalyst; coextrusion; FTIR; molecular weight

G. M. Mcnally, C. M. Small, W. R. Murphy, A. H. Clarke. The Effect of PIB Molecular Weight on the Cling Characteristics of Polyethylene-PIB Films for Stretch and Cling Film Applications. Journal of Plastic Film and Sheeting, 2005, 21 (1), pp.55-68. ⟨10.1177/8756087905052805⟩. ⟨hal-00572057⟩