Effect of the relative humidity on the fibre morphology of polyamide 4.6 and polyamide 6.9 nanofibres

被引：15
作者：
De Schoenmaker, Bert [1 ]
Van der Schueren, Lien [1 ]
Zugle, Ruphino [2 ]
Goethals, Annelies [1 ]
Westbroek, Philippe [1 ]
Kiekens, Paul [1 ]
Nyokong, Tebello [2 ]
De Clerck, Karen [1 ]
机构：
[1] Univ Ghent, Zwijnaarde, Belgium
[2] Rhodos Univ, Grahamstown, South Africa
来源：
JOURNAL OF MATERIALS SCIENCE | 2013年 / 48卷 / 04期
关键词：
ELECTROSPUN;
D O I：
10.1007/s10853-012-6934-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To obtain uniform and reproducible nanofibres, it is important to understand the effect of the different electrospinning parameters on the nanofibre morphology. Even though a lot of literature is available on the electrospinning of nanofibres, only minor research has been performed on the effect of the relative humidity (RH). This paper investigates the influence of this parameter on the electrospinning process and fibre morphology of the hydrophilic polyamide 4.6 and the less hydrophilic polyamide 6.9. First, the electrospinning process and deposition area of the nanofibres is examined at 10, 50 and 70 % RH. Subsequently, the effect of the polyamide concentration and solvent ratio on the fibre morphology is investigated using scanning electron microscopy and differential scanning calorimetry. It was found that the nanofibre diameter decreased with increasing RH. This resulted in less stable crystals for polyamide 4.6 while electrospinning of polyamide 6.9 at higher RH led to slightly more stable crystals. In conclusion, the water affinity of a polymer is an important factor in predicting the nanofibre morphology at different humidities.
引用
收藏
页码：1746 / 1754
页数：9
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