Ali Muhammad, Li Ya, He Ji-Huan
National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China.
College of Textile Science and Engineering (International Silk College), Zhejiang Sci-Tech University, Hangzhou, 310018, China.
Recent Pat Nanotechnol. 2025;19(3):453-465. doi: 10.2174/0118722105259729231004040238.
Background: Bipolymeric nanofibers have gained significant attention in various fields due to their enhanced functionality, improved mechanical properties, and controlled release capabilities. However, the fabrication of these composite fibers with a well-defined polymer-polymer interface remains a challenging task.
Methods: The double bubble electrospinning setup was developed and simulated using Maxwell 3D to analyze the electric field. PVP and PVA polymers were electrospun simultaneously to create bipolymer nanofibers with an interface. The resulting nanofibers were compared with nanofibers made from pure PVA, PVP, and a PVA/PVP blend. The characterization of the nanofibers was performed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA).
Results: The SEM images showed the formation of PVA/PVP interfacial nanofibers aligned side by side, with a diameter of a few thousand nanometers on each side. By increasing the voltage from 20 kV to 40 kV during electrospinning, the diameter of the nanofibers on the PVA and PVP sides was successfully reduced by 60.8% and 66.3%, respectively. FTIR analysis confirmed the presence of both PVA and PVP in the bipolymeric interfacial nanofibers. TGA analysis demonstrated a weight retention of 14.28% compared to PVA, PVP, and the PVA/PVP blend even after degradation at 500°C. The Maxwell simulation of double bubble electrospinning revealed a stronger and more uniform electric field pattern at 40 kV compared to 20 kV.
Conclusion: The study has demonstrated the potential of double bubble electrospinning for the fabrication of bipolymer nanofibers with an interface, opening new avenues and patents for the development of functional nanofibers.
.双聚合物纳米纤维因其增强的功能、改进的机械性能和可控释放能力在各个领域受到了极大关注。然而，制备具有明确聚合物 - 聚合物界面的这些复合纤维仍然是一项具有挑战性的任务。
开发了双气泡静电纺丝装置，并使用Maxwell 3D进行模拟以分析电场。同时对聚乙烯吡咯烷酮（PVP）和聚乙烯醇（PVA）聚合物进行静电纺丝，以制备具有界面的双聚合物纳米纤维。将所得纳米纤维与由纯PVA、PVP以及PVA/PVP共混物制成的纳米纤维进行比较。使用扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和热重分析（TGA）对纳米纤维进行表征。
SEM图像显示形成了并排排列的PVA/PVP界面纳米纤维，每一侧的直径为几千纳米。在静电纺丝过程中将电压从20 kV提高到40 kV时，PVA侧和PVP侧纳米纤维的直径分别成功减小了60.8%和66.3%。FTIR分析证实了双聚合物界面纳米纤维中同时存在PVA和PVP。TGA分析表明，即使在500°C降解后，与PVA、PVP和PVA/PVP共混物相比，其重量保留率为14.28%。双气泡静电纺丝的Maxwell模拟显示，与20 kV相比，40 kV时电场模式更强且更均匀。
该研究证明了双气泡静电纺丝在制备具有界面的双聚合物纳米纤维方面的潜力，为功能性纳米纤维的开发开辟了新途径并申请了专利。
