Fibers with a diameter of 100-500 nm are generally considered as nanofibers. Strictly speaking, nanofibers are nonwoven webs of sub-micron-sized fibers, and depending on the end use, including biodegradable polymers can be made by electrospinning into nanofiber webs. Due to the advantages of nanometer-sized fiber products, such as large specific surface area, flexibility, air permeability, microporous structure, light weight, high Young's modulus, and good functionality, there have been a few successful batch applications. Examples include filters, liners for chemically-resistant fabrics, tissue scaffolds, and some cutting-edge engineering applications.
The Natick Military Center in the United States collaborated with the government, industry, and academies to explore the practical applications of nanofibers and nanoparticulate materials in protective clothing, such as electrospinning fabrics of thermoplastic elastomer polyurethanes, with good performance; it is highly elastic and does not require Further processing or processing, the intensity is higher. The current tests and developments focus on functional meltblowing and electrospinning; blending with nanoscale aluminum and titanium materials into mesh materials, followed by other methods, adding reactive compounds to fabrics to achieve stain removal performance.
The United States Donaldson Corporation has been engaged in the application of nanofiber web biomedical research for More than 20 years. In 1981, UltraWeb nanofiber filtration equipment was industrialized and it has been expanded into new applications such as nanofiber cell culture materials and barrier smoke garments. In 2002, Donaldson established a new team to develop a three-dimensional cell culture medium that mimics the biodegradable nanomaterials of the extracellular matrix (ECM) in the body. Because it is similar to the extracellular matrix, it can be used as a tissue scaffold. This kind of scaffold makes cells close to each other and grow into a three-dimensional organization. The key factors are mechanical stability, biological coordination, cell proliferation and cell interaction and other excellent properties.
Recently, interest in nanometer-spun-spinning fibers has been enormous. Hills has successfully produced homogenous melt-spinning island-in-the-sea type microfibers with a diameter of 250 nm and successfully manufactured nano-tubes with a diameter of 300 nanometers by using an island forming method. With a thickness of 50-100 nm, Hills nanofibers can be used for defense against chemical weapons, drug release, micron filtration and micron hydraulics (hydraulics).
In 1991, Sumio Ijima, a pure laboratory of Japan Electric Power Company (NEC), successfully developed multilayered carbon nanotubes, which are characterized by light weight, high strength, good electrical properties, and good heat resistance. Scientists from the NanoTech Institute at the University of Texas at Dallas (UTD) in collaboration with the Commonwealth Scientific and Industrial Research Organisation of Australia (CSIRO) have added layers of carbon nanotubes to the spinning process to produce high strength, good toughness, extremely soft, conductive materials. The yarns for heat transfer can be made into “smart†garments that store electricity, bulletproof, temperature-control, porous, and are very comfortable to wear.
The Natick Military Center in the United States collaborated with the government, industry, and academies to explore the practical applications of nanofibers and nanoparticulate materials in protective clothing, such as electrospinning fabrics of thermoplastic elastomer polyurethanes, with good performance; it is highly elastic and does not require Further processing or processing, the intensity is higher. The current tests and developments focus on functional meltblowing and electrospinning; blending with nanoscale aluminum and titanium materials into mesh materials, followed by other methods, adding reactive compounds to fabrics to achieve stain removal performance.
The United States Donaldson Corporation has been engaged in the application of nanofiber web biomedical research for More than 20 years. In 1981, UltraWeb nanofiber filtration equipment was industrialized and it has been expanded into new applications such as nanofiber cell culture materials and barrier smoke garments. In 2002, Donaldson established a new team to develop a three-dimensional cell culture medium that mimics the biodegradable nanomaterials of the extracellular matrix (ECM) in the body. Because it is similar to the extracellular matrix, it can be used as a tissue scaffold. This kind of scaffold makes cells close to each other and grow into a three-dimensional organization. The key factors are mechanical stability, biological coordination, cell proliferation and cell interaction and other excellent properties.
Recently, interest in nanometer-spun-spinning fibers has been enormous. Hills has successfully produced homogenous melt-spinning island-in-the-sea type microfibers with a diameter of 250 nm and successfully manufactured nano-tubes with a diameter of 300 nanometers by using an island forming method. With a thickness of 50-100 nm, Hills nanofibers can be used for defense against chemical weapons, drug release, micron filtration and micron hydraulics (hydraulics).
In 1991, Sumio Ijima, a pure laboratory of Japan Electric Power Company (NEC), successfully developed multilayered carbon nanotubes, which are characterized by light weight, high strength, good electrical properties, and good heat resistance. Scientists from the NanoTech Institute at the University of Texas at Dallas (UTD) in collaboration with the Commonwealth Scientific and Industrial Research Organisation of Australia (CSIRO) have added layers of carbon nanotubes to the spinning process to produce high strength, good toughness, extremely soft, conductive materials. The yarns for heat transfer can be made into “smart†garments that store electricity, bulletproof, temperature-control, porous, and are very comfortable to wear.
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