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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of polyurethane nanofibers by electrospinning
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Preparation of polyurethane nanofibers by electrospinning

机译：电纺丝法制备聚氨酯纳米纤维

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Polyurethane (PU) nanofibers were prepared by the electrospinning method. The process parameters, including the applied voltage, feeding rate, and solution concentration, were investigated carefully. The results showed that the resultant nanofibers, electrospun from PU/N,N-dimethylformamide (DMF) solutions, had ultratine diameters ranging from about 700 to 50 nm. In addition, it was found that the diameters and morphology of the nanofibers were influenced greatly by the process parameters. In particular, the solution concentration played a main role in influencing the transformation of the polymer solution into ultrafine fibers, and the diameters increased with the solution concentrations increasing. Finally, it was concluded that uniform PU nanofibers without beads or curls could be prepared by electrospinning through good control of the process parameters, such as 5.0-7.0 wt % PU/DMF solutions, 10-15-kV applied voltages, and 0.06-0.08 mm/min feeding rates. (c) 2008 Wiley Periodicals, Inc.
机译：聚氨酯（PU）纳米纤维是通过静电纺丝法制备的。仔细研究了工艺参数，包括施加的电压，进料速率和溶液浓度。结果表明，从PU / N，N-二甲基甲酰胺（DMF）溶液中静电纺丝得到的纳米纤维的超常规直径为700至50 nm。另外，发现纳米纤维的直径和形态受到工艺参数的很大影响。特别地，溶液浓度在影响聚合物溶液向超细纤维的转变中起主要作用，并且直径随着溶液浓度的增加而增加。最后，得出的结论是，通过对工艺参数（如5.0-7.0 wt％的PU / DMF溶液，10-15kV施加电压和0.06-0.08）的工艺参数进行良好的控制，可以通过静电纺丝制备出无珠或卷曲的均匀PU纳米纤维。毫米/分钟的进给速度。 （c）2008 Wiley期刊公司

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