Merchiers Jorgo, Meurs Willem, Deferme Wim, Peeters Roos, Buntinx Mieke, Reddy Naveen K
Hasselt University, Institute for Materials Research (IMO-IMOMEC), B-3590 Diepenbeek, Belgium.
IMEC vzw-Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium.
Polymers (Basel). 2020 Mar 5;12(3):575. doi: 10.3390/polym12030575.
Centrifugal fiber spinning has recently emerged as a highly promising alternative technique for the production of nonwoven, ultrafine fiber mats. Due to its high production rate, it could provide a more technologically relevant fiber spinning technique than electrospinning. In this contribution, we examine the influence of polymer concentration and nozzle material on the centrifugal spinning process and the fiber morphology. We find that increasing the polymer concentration transforms the process from a beaded-fiber regime to a continuous-fiber regime. Furthermore, we find that not only fiber diameter is strongly concentration-dependent, but also the nozzle material plays a significant role, especially in the continuous-fiber regime. This was evaluated by the use of a polytetrafluoroethylene (PTFE) and an aluminum nozzle. We discuss the influence of polymer concentration on fiber morphology and show that the choice of nozzle material has a significant influence on the fiber diameter.
离心纤维纺丝最近已成为一种极具前景的替代技术，用于生产非织造超细纤维毡。由于其高生产率，与静电纺丝相比，它可以提供一种技术上更具相关性的纤维纺丝技术。在本论文中，我们研究了聚合物浓度和喷嘴材料对离心纺丝过程及纤维形态的影响。我们发现，增加聚合物浓度会使纺丝过程从珠状纤维状态转变为连续纤维状态。此外，我们发现不仅纤维直径强烈依赖于浓度，而且喷嘴材料也起着重要作用，特别是在连续纤维状态下。这是通过使用聚四氟乙烯（PTFE）喷嘴和铝制喷嘴进行评估的。我们讨论了聚合物浓度对纤维形态的影响，并表明喷嘴材料的选择对纤维直径有显著影响。
