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

Table 5

DMTA results for HDPE and the HDPE composites containing Ag-SiO₂ or Cu-SiO₂.

Sample	Storage modulus (MPa) at 23°C	Loss modulus (peak position) (°C)			Loss modulus (peak high) (MPa)
		𝑇𝛾	𝑇𝛽	𝑇𝛼	𝑇𝛾	𝑇𝛽	𝑇𝛼
HDPE	1140	−120.2	−36.3	41.9	169	35.7	105
HDPE/Ag-SiO2 (90/10)	1250	−119.6	−47.1	44.1	143	43.6	112
HDPE/Ag-SiO2 (85/15)	1320	−119.9	−51.3	44.6	157	49.7	116
HDPE/Cu-SiO2 (90/10)	1240	−122.0	−41.8	45.7	157	36.3	113
HDPE/Cu-SiO2 (85/15)	1270	−121.8	−47.1	44.5	163	40.5	116