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首页> 外文期刊>Journal of Applied Polymer Science >Syndiotactic polypropylene nanofibers obtained from solution electrospinning process at ambient temperature
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Syndiotactic polypropylene nanofibers obtained from solution electrospinning process at ambient temperature

机译：在室温下通过溶液静电纺丝工艺获得的间同立构聚丙烯纳米纤维

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摘要

Fabrication of semicrystalline syndiotactic polypropylene (sPP) nanofibers by solution electrospinning was studied. It was found that sPP nanofibers with an average diameter of 230 nm were successfully fabricated via solution electrospinning with methylcyclohexane as solvent at room temperature (25 degrees C). The obtained diameter was significantly thinner than the minimum diameter of 350 nm of PP fibers that were reported previously. It was also found that increasing viscosity of the sPP solution, which was customarily a useful way of fabricating noncrystalline thin fibers, was found ineffectual in producing thinner semicrystalline sPP fibers in our experiments. In fact, a careful selection of solvent by considering the evaporation rate and the specific viscosity could effectively lead to the fabrication of thinner sPP fibers by imposing proper elongation and preventing the sPP solution from gelation. The results could be applied to other semicrystalline polyolefins with similar gelation characteristics analogous to sPP to produce thinner nanofibers. (c) 2015 Wiley Periodicals, Inc.
机译：研究了溶液电纺丝法制备半结晶间规聚丙烯（sPP）纳米纤维。发现通过在室温（25℃）下以甲基环己烷为溶剂的溶液电纺丝成功地制造了平均直径为230nm的sPP纳米纤维。所获得的直径明显比之前报道的PP纤维的最小直径350 nm细。还发现在我们的实验中发现增加sPP溶液的粘度（这通常是制造非晶态细纤维的一种有用方法）在生产更细的半结晶sPP纤维方面无效。实际上，通过考虑蒸发速率和比粘度来仔细选择溶剂可以有效地导致通过施加适当的伸长并防止sPP溶液凝胶化来制造更细的sPP纤维。该结果可应用于具有类似于sPP的相似凝胶特性的其他半结晶聚烯烃，以生产更薄的纳米纤维。 （c）2015年威利期刊有限公司

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