engleski

Study of the Compatibilizer Effect on Blends Prepared from Waste Poly(ethylene-terephthalate) and High Density Polyethylene

In this work mechanical recycling of waste poly(ethylene-terephthalate) (PET) in presence of high density polyethylene (HDPE) was studied. Fraction of HDPE in PET/HDPE blends was 3, 5, 6 and 10 wt.-%. Isocyanate HI compatibilizer was first synthesized and then added in blends in fraction of 5 wt.-%. Ethylene-propylene-diene masterbatch (EPDM-M) was prepared by mixing and added in fraction of 15, 30 and 50 wt.-%. All studied PET/HDPE blends were characterized by scanning electron microscopy SEM, differential scanning calorimetry DSC and melt flow rate (MFR) was determined. Blends prepared with isocyanate HI compatibilizer were also studied by FTIR spectroscopy. Appearance of new vibrations at FTIR spectra confirms that during the blending reactions between isocyanate HI compatibilizer and blend components appear. Results show that used compatibilizers significantly improved compatibility of polymers in studied blends. From the results it is obvious that immiscibility of PET and HDPE can be overcome.

compatibilizer; high density polyethylene (HDPE); mechanical recycling; poly(ethylene-terephthalate) (PET); polymer blends

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