In this study multilayer films of a conventional LLDPE/1-octene and metallocene linear low density polyethylene (mLLDPE) were produced by cast co-extrusion process. Coextruded films were obtained varying the position and the relative thicknesses of the two polymers. Rheological characterization of the resins was performed in order to evaluate the flow behavior (melt instabilities) of each material. Haze measurements and mechanical (tensile and impact) tests were carried out on the produced films in order to verify the effect of layer composition and position on the performances of the coextruded samples. Thermal and AFM characterization of the three-layer structures were also performed to correlate the resulting morphology with the film properties.
Production and characterization of coextruded cast films based on conventional and metallocene poly(ethylene/α-olefin) copolymers
GAROFALO, EMILIA;SCARFATO, Paola;DI LASCIO, TIZIANA;DI MAIO, Luciano;INCARNATO, Loredana
2010-01-01
Abstract
In this study multilayer films of a conventional LLDPE/1-octene and metallocene linear low density polyethylene (mLLDPE) were produced by cast co-extrusion process. Coextruded films were obtained varying the position and the relative thicknesses of the two polymers. Rheological characterization of the resins was performed in order to evaluate the flow behavior (melt instabilities) of each material. Haze measurements and mechanical (tensile and impact) tests were carried out on the produced films in order to verify the effect of layer composition and position on the performances of the coextruded samples. Thermal and AFM characterization of the three-layer structures were also performed to correlate the resulting morphology with the film properties.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
