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In this paper, the basic principles, control parameters, materials, and partial nanofiber structures of electrospinning are described. The electrospinning device, part of the collecting device and the nozzle module designed based on the theory are introduced. In addition, two nanofiber additive technologies, 3D printing and near-field electrowriting, are also introduced.
Electrospinning is a technique for preparing nanofibers, which can produce fibers with nanoscale diameters. It is a process in which a high voltage electrostatic field is used to eject a polymer solution, which is then collected on a receiver as fibers.
With the continuous development of technology, electrospinning technology, as an advanced method for preparing nanofibers, is increasingly attracting widespread attention. Among many applications, Polyvinyl Alcohol (PVA) electrospinning technology shows great potential in the field of thin film materials due to its high efficiency, low cost, and strong controllability.
In this paper, the properties, bioactivity and biocompatibility of electrospun PVP (polyvinylpyrrolidone) were summarized, and the application of its nanofibers in biomedical grafts was summarized. PVP has been developed and widely used to manufacture various biomedical products through electrostatic spinning, 3D/4D printing and other technologies.
Polycaprolactone (PCL) has excellent biocompatibility, memory and biodegradability. Electrospun PCL has the characteristics of softness, easy processing and excellent mechanical properties. It is often used as a scaffold material for tissue engineering.
Melt electrospinning is a technology that directly melts polymers and electrospun them to form fibers under high temperature conditions. Usually the melt electrospinning device is composed of a feeding mechanism, a heater, a nozzle, a high-voltage power supply, and a collecting plate.