Polycaprolactone (PCL) is biodegradable and non-toxic, making it an eco-friendly polymer with various medical applications. In order to increase the stability of PCL used in the field of medical applications, it is necessary to be able to produce fibers with a melt electrospinning method that does not use toxic hydrophobic solvents. However, PCL has very high viscosity and low conductivity, making melt electrospinning difficult. This study presents natural additives enabling the solvent-free melt electrospinning of PCL, wherein the physical properties (i.e., conductivity and viscosity) of the additive-mixed PCL are analyzed. Among the natural additives added to PCL, 7 wt% gallic acid increased conductivity by 81 times and decreased viscosity by 1/8526 times, showing the best results. We believe that our study, improving the physical properties of melt PCL by adding natural additives, will be of great help to the development of the melt electrospinning method of PCL.
Bibliographical noteFunding Information:
This work was supported by Korea Evaluation Institute Of Industrial Technology (KEIT) grant funded by the Ministry of Trade, Industry and Energy (MOTIE) (20017630, Materials/Parts Technology Development Program). B.K. was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (2021R1A6A1A10039823), and the National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT (NRF-2021R1A2C4002069). KS.P. acknowledges support from the Basic Science Research Program of the Research Institute for Basic Sciences (RIBS) of Jeju National University through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (2019R1A6A1A10072987). This research was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (NRF-2022R1I1A3072996).
© 2023 by the authors.
- electric conductivity
- melt electrospinning
- natural additives