High-Density Polyethylene Composites Filled with Nanosilica Containing Immobilized Nanosilver or Nanocopper: Thermal, Mechanical, and Bactericidal Properties and Morphology and Interphase Characterization

Table 3

DSC test: thermal transition properties (second run) of HDPE-based composites filled with different contents of Ag-SiO₂ or Cu-SiO₂.

Sample	𝑇𝑚 (°C)	𝑇𝑐 (°C)	𝑋𝑐^a (%)
HDPE	134	118	68
HDPE/Ag-SiO2 (90/10)	133	120	66
HDPE/Ag-SiO2 (85/15)	133	121	65
HDPE/Cu-SiO2 (90/10)	133	120	68
HDPE/Cu-SiO2 (85/15)	133	121	67

aAssessed by integrating the normalized area of the melting endothermic peak and rationing the heat involved to the reference value of 100% crystalline HDPE (293 J/g).