Location-controlled crazing in polyethylene using focused electron beams and tensile strain

Abstract

This study explores the use of focused electron beam (FEB) dot irradiation and tensile stress to control crazing formation in polymers at the microscale. Polyethylene (PE) containing carbon was subjected to FEB dot irradiation at 5–20 kV of accelerating voltage, followed by nominal strains of 0–70 %. The results revealed that FEB irradiation affects the structure and mechanical properties of PE. The Raman spectroscopy showed a glassy polymer of amorphous structure with the intensity changed after irradiation, which led to craze formation at the location of the electron beam dot irradiation after the tensile deformation. Rhombus-shaped crazes were observed at the locations of the electron beam irradiation in the dot area, which were evenly distributed and sized. Our findings provide insights into the control of crazing location in polymers and provide a promising approach to controlling the different shapes and sizes of crazing in polymers for future applications.