Polymeric Nano-Fibers and Modified Nano-Fibers Assembly in 3D Network for Different Potential Applications
Journal of Materials Science and Nanotechnology
Polymeric nano-fiber based materials and their application is one of the research areas in materials science and nanotechnology. Nano-fibrous materials are receiving extensive research interest for applications in diverse fields as biosensors, optical and chemical sensors, stimuli-responsive or "smart" materials, bioreactors, drug delivery carriers, antibacterial materials, tissue engineering scaffolds, clean energy, electronic and semi-conductive materials, reinforced nano-composites, affinity
... omposites, affinity membranes, etc. This is because of their important and interesting characteristics such as a very high surface area to volume ratio, tunable void volume fraction and inter-fiber space, flexibility in surface functionalities, good mechanical performance and malleability to construct a wide variety of nano-fiber based materials including beaded, ribbon, porous, and core-shell nano-fibers. Electro-spinning or electro-static spinning is the most considered technique for fabrication of nano-fibers. Synthetic and biopolymers, polymer blends, melts, nano-particle or drug-impregnated polymers, and ceramic precursors have been successfully used to produce electro-spun nano-fibers. Because the surface chemical and physical properties of the nano-fibers play an important role for a specific application, various surface modification techniques have been applied. A variety of bioactive molecules including anti-cancer drugs, enzymes and polysaccharides have been physically immobilized on the surface of nano-fibers. Editorial Open Access Fiber materials with diameters within the nanometer range when compared with micro-scale materials have several important characteristics such as a very high surface area to volume ratio, which for a nano-fiber can be as large as 103 times that of a microfiber, tunable void volume fraction or "porosity", inter-fiber space or "pore size" ranging from ten nanometers to several micrometers, flexibility in surface functionalities, good mechanical performance and malleability to construct a wide variety of fiber sizes, shapes as well as the formation of different tailored membranes .