نوع مقاله : پژوهشی
نویسندگان
اصفهان، دانشگاه صنعتی اصفهان دانشکده مهندسی نساجی، صندوق پستی 84156-83111
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Hypothesis: Synthetic polymers, due to their tunable properties, favorable processability, and broad range of applications in industrial and biomedical fields, play a significant role in advancing modern technologies. Among them, polycaprolactone (PCL), as a linear aliphatic biodegradable polyester, has gained a special position in advanced research and applications owing to its remarkable mechanical flexibility and biocompatibility. This polymer is widely used in fields such as tissue engineering, controlled drug delivery systems, and the fabrication of advanced membranes. Despite its numerous advantages, PCL faces limitations such as low hydrophilicity and slight surface roughness, which can affect its performance in certain applications.
Methods: In this study, electrospun webs of polycaprolactone were fabricated under different humidity conditions (30% and 60%) during the electrospinning process to enable the formation of diverse morphologies. After production, these webs underwent surface modification using atmospheric pressure plasma treatment. In the final stage, various tests were conducted to investigate the physical, chemical, and structural properties of the prepared webs.
Findings: Examination of scanning electron microscopy (SEM) images of the electrospun webs revealed that increasing the ambient humidity from 30% to 60% changed the surface morphology of the nanofibers from smooth and uniform to a porous structure. Fourier-transform infrared spectroscopy (FTIR) analysis also confirmed the successful implementation of the plasma surface modification process, as evidenced by the appearance of a broad peak around the wavenumber 3500 cm⁻¹, which corresponds to the hydroxyl group. Furthermore, water contact angle measurements on the porous electrospun webs after plasma surface modification showed a 37° reduction in contact angle (from 91° to 54°). These results indicate that the increased surface porosity, along with plasma treatment, has enhanced the surface roughness and improved the hydrophilicity of polycaprolactone nanofibers.
کلیدواژهها [English]
)