Ballistic resistance 1 Ballistics 1 Body armour 1 Carbon 1 Chemical degradation 1 Degradation 1 Electron spin resonance spectroscopy 1 Fibers 1 Free radicals 1 High-strength 1 High-strength fibers 1 Lower density 1 Paramagnetic resonance 1 Polyethylene fibers 1 Polyethylenes 1 Size exclusion chromatography 1 Thermal aging 1 Thermally induced degradations 1 Ultra-high 1 Ultra-high molar mass polyethylene high strength fiber 1 molar mass 1 thermal aging 1 ultra-high molar mass polyethylene (UHMMPE) 1