Table 4: Overview of the tested metal-loaded formulations.

Formulation Number of samples Port diameter (mm) External sample diameter (mm)

HTPB + 10% ALEX + 2% C 4 4 18
HTPB + 10% ALEX + 2% TiO2 6 4 18
HTPB + 10% ALEX + 2% C + 2% Mg 3 4 18
HTPB + 10% L-ALEX 4 4 18
HTPB + 2.5% MgH2 + 1.4% MgB 4 4 18
HTPB + 2.5% MgH2 4 4 18
HTPB + 7.5% MgH2 8 4 18
HTPB + 5% MgH2 + 5% ALEX + 1% C 4 4 18
HTPB + 2.27% Mg + 1.4% MgB 4 4 18
HTPB + 2.8% MgB 2 4 18