Abstract :
Poly(propylene carbonate) (PPC) was implanted by oxygen ion with energy of 40 keV. The influence of experimental parameters was
investigated by varying ion fluence from 1 1012 to 1 1015 ions/cm2. XPS, SEM, surface roughness, wettability, hardness, and modulus were
employed to investigate structure and properties of the as-implanted PPC samples. Eight chemical groups, i.e., carbon, C–H, C–O–C, C–O, O–C–
O, C O, , and groups were observed on surfaces of the as-implanted samples. The species and relative intensities of the
chemical groups changed with increasing ion fluence. SEM images displayed that irradiation damage was related strongly with ion fluence. Both
surface-recovering and shrunken behavior were observed on surface of the PPC sample implanted with fluence of 1 1015 ions/cm2. As increasing
ion fluence, the surface roughness of the as-implanted PPC samples increased firstly, reached the maximum value of 159 nm, and finally decreased
down the minimum value. The water droplet contact angle of the as-implanted PPC samples changed gradually with fluence, and reached the
minimum value of 708 with fluence of 1 1015 ions/cm2. The hardness and modulus of the as-implanted PPC samples increased with increasing
ion fluence, and reached their corresponding maximum values with fluence of 1 1015 ions/cm2. The experimental results revealed that oxygen
ion fluence closely affected surface chemical group, morphology, surface roughness, wettability, and mechanical properties of the as-implanted
PPC samples.
