Investigation of the Effect of Gamma-Radiation on High-Density Polyethylene by Solid-State Magic-Angle 13C NMR Spectroscopy

Abstract
The structural and morphological changes occurring in high-density polyethylene when exposed to gamma-radiation have been investigated by high-resolution solid state 13C NMR. NMR measurements are used to study the effect of gamma-radiation on crystalline and amorphous components. In addition, resonance peaks due to direct cross-links have been detected. The changes in main chain unsaturation are also studied.