Fabrication and Characterization of Polyglycerol Fatty Acid Esters/Polyethylene Antifogging Film

摘要

The antifogging polyglycerol fatty acid esters (PGFE)/polyethylene (PE) film with polyethylene wax emulsions (WE1) as a dispersant was fabricated using twin-screw extruder and then extrusion blow molding. The study was conducted to investigate the influence that different levels of PGFE on the antifogging performance, mechanical, optical, thermostability and cross-section microstructures of PGFE/PE film. The modified polymer film had been characterized by contact angle measurement (CAM), thermogravimetric analysis, Fourier transform infrared spectroscopy and scanning electron microscopy. The results revealed that WE1 and PGFE could mix evenly with PE resin. Compared with 100% low-density polyethylene film, PGFE incorporation improved antifogging performance, hydrophilicity, haze and thermostability, however, decreased light transmittance and tensile strength. When the content of PGFE is 2%, PGFE/PE film has a long lasting antifogging performance, high-quality mechanical stability and light transmittance. It has a great potential to be applied in food packaging.