3.5. Thermal Studies TG-DTA/DSC

Thermogravimetric (TGA) and differential thermal analysis (DTA) were performed on pure CS, modified CS_BO hybrid blend, and all the produced LDPE/CS_BO samples. Measurements performed by a Perkin-Elmer Pyris Diamond TGA/DTA instrument (Interlab, S.A., Athens, Greece). Samples of approximately 5 mg were heated under an N₂ flow, from 25 to 700 ℃, with a temperature increasing rate of 5 K/min. The thermal behavior of the obtained LDPE/CS_BO film and of the reference LDPE film was also studied using a DSC214 Polyma Differential Scanning Calorimeter (NETZSCH manufacturer, Selb, Germany). Samples between 1.2–3.3 mg were tested in the temperature range from −30 to 200 °C at a heating rate of 10 K/min under a nitrogen atmosphere.