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Electrostatic spinning technology is a simple and practical method for continuous production of nanofibers . Nanofibers with excellent mechanical properties , great surface area and aspect ratio , which is widely used in tissue engineering scaffold materials, catalysts , nano- composite materials, optical materials and other fields. This paper was prepared using electrospinning nanofibers , mainly in the following aspects: ( 1 ) explores the solvent composition , concentration / viscosity , spinning orifice diameter and molecular weight cellulose acetate (CA) electrospinning of . And a single solvent N, N- dimethylacetamide (DMAc) or acetone comparison , 2:1 acetone / DMAc acetate mixed solvent is more suitable for the preparation of cellulose nanofiber . Studies show that the pore size effect spinneret fiber diameter distribution . With CA molecular weight increases , the fiber morphology of spindle-shaped beads from large particles , gradually transformed into a small cone-shaped beads containing fibers, until relatively uniform thickness and no defects of the fiber. ( 2 ) with acetone , N, N- dimethylformamide (DMF) and acetone / DMF three solvents system, research styrene - maleic anhydride copolymer (SMA) electrospinning , the system had a diameter of up to 170 nm nano fibers. Found prepare uniform diameter , smooth, defect free beads nanofibers best acetone SMA / DMF solvent volume ratio of 2:1. ( 3 ) through electrospinning to prepare a series of different component ratio of CA / polyurethane (PU) composite nanofibers . Selectively removing one of the components , the product can well keep the fibrous structure, and significantly reduced in diameter ; fiber structure description void- CA and PU dispersed , forming a nano- composite fiber continuous symbiosis . CA / PU composite nanofibers CA and PU components combine excellent properties , reflecting the excellent mechanical properties . ( 4 ) the use of nanofibers prepared translucent good nanofiber reinforced composites. Suo Nami the fiber when the fiber diameter of 280 nm, even if the content of the composite film of up to 40 %, the cellulose nanofiber / polyvinyl alcohol (PVA) composite film transmittance as high as 85% , and has excellent tensile tensile strength and Young's modulus , the two were about 66MPa and 3.2GPa.
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