Structure and Performance of Polyolefin/Nanocomposite/Polyolefin Multilayer Films

摘要

In this study, we investigated the structure and some properties of multilayer films with a core layer of nanoclayfilled PA, PP or PLA and side layers of polyethylene (PE) were obtained from the extrusion cast or blowing process.The structure of the films was investigated using microscopy and X-ray diffraction. The properties that are studied arethe mechanical properties in terms of modulus, strength and elongation in addition to tear and haze for films and barrierproperties. The effect of nanoclay content in the range of 1 to 7.5 wt% is investigated. In terms of structure, it wasfound that the clay platelets aligned in the films plane. Exfoliation was observed for the PA-nanoclay system, some intercalationwas observed in the case of PLA-nanoclay and no change in the clay spacing was observed in the case of PPnanoclaysystem. For the performances, it was generally found that the presence of clay enhanced the modulus, tear andbarrier properties, but little change was observed in the other properties.