Abstract
Chitosan has been used for biomedical applications in recent years, primarily because of its biocompatibility. A chitosan membrane with a 30 μm thickness was prepared and investigated for its surface modification using methane ions. Methane ions were implanted into the chitosan membrane using a Kaufman ion source; bombardment was accomplished using three accelerating voltages of ion beams—30, 55, and 80 kV. The influence of the ion bombardment on morphology, crystallinity, and hydrophilicity was investigated. Attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy analysis showed that a triplet bond appeared after the implantation of methane ions (acceleration voltage: 80 kV), culminating in the creation of a more amorphous membrane structure. The analyses of atomic force microscopy (AFM) images showed that, with the increase in bombardment energy, the roughness of the surface changed. These results revealed that ion bombardment improved the hydrophilicity of the membranes and the water fluxes of chitosan membranes altered after methane ion bombardment.
Highlights
Chitosan is obtained from chitin by deacetylation and is an abundant polysaccharide usually produced from seafood as a waste product [1]
Methane gas is decomposed to fragments like H+, H2 +, C+, CH+, CH2 +, CH3 +, and CH4 + as a consequence of tungsten cathode electron emission with each fragment accelerating towards chitosan membranes
In as much as the binding energy between C and H is thousands times less than the projectile energy, the entities break totally into C and H. This could happen, when they bump the surface of the membrane and each ion of C and H enters the chitosan membrane with nearly the identical kinetic energy as in the compound [33]
Summary
Chitosan is obtained from chitin by deacetylation and is an abundant polysaccharide usually produced from seafood as a waste product [1] It has garnered significant notice because of its potential beneficial applications in medical science, especially in pharmaceutical areas, due to its biocompatibility, low toxicity, and biodegradability [2,3,4,5,6,7,8,9,10,11]. The ion beam implantation technique is a well-known and effective method to modify polymers [22,23]. Radiation treatment is a fast and relatively clean method and can alter physico-chemical properties of polymers due to chain scissoring, cross-linking, carbonization, oxidation, and radical formation [24,25,26,27,28,29] and does improve the electrical
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