Fadil Fatirah, Adli Farah Atiqah, Affandi Nor Dalila Nor, Harun Ahmad Mukifza, Alam Mohammad Khursheed
Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia.
Engineering Faculty, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia.
Polymers (Basel). 2020 Dec 18;12(12):3043. doi: 10.3390/polym12123043.
The lack of aesthetic properties of electrospun nanofibres in terms of colour appearance is the drive in this preliminary study. This research is conducted to study the dyeing behaviour and colorimetric properties of electrospun nanofibres blended with Remazol Yellow FG reactive dye using dope-dyeing method via electrospinning process. This paper reports the colorimetric properties of dyed poly vinyl alcohol (PVA) nanofibres within the range of 2.5 wt.% to 12.5 wt.% dye content. The electrospinning parameters were fixed at the electrospinning distance of 10 cm, constant feed rate of 0.5 mL/h and applied voltage of 15 kV. The resulting impregnated dye of 10 wt.% exhibits acceptable colour difference of dyed PVA nanofibres, with a mean fibre diameter of 177.1 ± 11.5 nm. The SEM micrographs show the effect of dye content on morphology and fibre diameter upon the increment of dye used. Further increase of dye content adversely affects the jet stability during the electrospinning, resulting in macroscopic dropping phenomenon. The presence of all prominent peaks of Remazol dye in the PVA nanofibers was supported with FTIR analysis. The addition of dye into the nanofibres has resulted in the enhancement of thermal stability of the PVA as demonstrated by TGA analysis.
在这项初步研究中，静电纺纳米纤维在颜色外观方面缺乏美学特性是驱动力所在。本研究旨在通过静电纺丝过程中的原液染色法，研究与雷马素黄FG活性染料共混的静电纺纳米纤维的染色行为和比色特性。本文报道了染料含量在2.5 wt.%至12.5 wt.%范围内的染色聚乙烯醇（PVA）纳米纤维的比色特性。静电纺丝参数固定为：静电纺丝距离10 cm、恒定进料速率0.5 mL/h和施加电压15 kV。所得10 wt.%的浸渍染料显示出染色PVA纳米纤维可接受的色差，平均纤维直径为177.1 ± 11.5 nm。扫描电子显微镜图像显示了随着所用染料增加，染料含量对形态和纤维直径的影响。染料含量的进一步增加会对静电纺丝过程中的射流稳定性产生不利影响，导致宏观液滴现象。傅里叶变换红外光谱分析证实了PVA纳米纤维中雷马素染料所有显著峰的存在。热重分析表明，向纳米纤维中添加染料提高了PVA的热稳定性。
