A mechanism of surface hardness enhancement for H+ irradiated polycarbonate.
RSC Adv
; 10(48): 28603-28607, 2020 Aug 03.
Article
em En
| MEDLINE
| ID: mdl-35520065
ABSTRACT
H+ irradiation increases the surface hardness of polycarbonate. Nano indentation measurement shows that the hardness increases up to 3.7 GPa at the dose of 5 × 1016 # cm-2 and at the irradiation energy of 150 keV. In addition, the hardness increases with the dose and the energy of H+ irradiation. In accordance with the nano indentation measurement, the Fourier-transform infrared spectroscopy (FTIR) depends on the dose and energy of H+ irradiation. The peak at â¼1500 cm-1 for the aromatic ring and the peak at â¼1770 cm-1 for the C[double bond, length as m-dash]O stretch decrease with increasing dose and energy, while the increase of the dose and energy develops a new C[double bond, length as m-dash]O stretch vibration at â¼1700 cm-1 and forms aromatic hydrocarbons at â¼1600 cm-1. X-ray diffraction experiments are also consistent with the nano indentation measurement and FTIR spectra. Based on the experiments, we discuss a possible mechanism of the surface hardness enhancements by ion beam irradiation.
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MEDLINE
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En
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RSC Adv
Ano de publicação:
2020
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Article