Syndiotactic polypropylene nanofibers obtained from solution electrospinning process at ambient temperature
Syndiotactic polypropylene nanofibers obtained from solution electrospinning process at ambient temperature
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常温溶液静电纺丝工艺获得的间同立构聚丙烯纳米纤维
DOI：
10.1002/app.43238
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发表时间：
2015
影响因子：
3
通讯作者：
and A. Hotta
中科院分区：
文献类型：
--
作者：
T. Maeda;K. Takaesu;and A. Hotta
研究了溶液静电纺丝法制备半晶间规聚丙烯（sPP）纳米纤维。结果发现，在室温（25℃）下，以甲基环己烷为溶剂，通过溶液静电纺丝成功制备了平均直径为230 nm的sPP纳米纤维。所获得的直径明显小于先前报道的PP纤维的最小直径350 nm。我们还发现，增加 sPP 溶液的粘度通常是制造非晶态细纤维的有效方法，但在我们的实验中却发现对于生产更薄的半晶态 sPP 纤维无效。事实上，通过考虑蒸发速率和比粘度来仔细选择溶剂可以通过施加适当的伸长率并防止 sPP 溶液凝胶化，有效地制造更薄的 sPP 纤维。该结果可应用于具有与 sPP 相似的凝胶特性的其他半结晶聚烯烃，以生产更薄的纳米纤维。 © 2015 Wiley periodicals, Inc. J. Appl。聚合物。科学2016,133, 43238。
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°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. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016,133, 43238.
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