Mínguez-García David, Díaz-García Pablo, Gisbert-Payá Jaime, Bonet-Aracil Marilés
Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València, 03801 Alcoy, Spain.
Polymers (Basel). 2023 Sep 27;15(19):3903. doi: 10.3390/polym15193903.
The combination of a nanofibre net and textile support represents an interesting composite capable of conferring various properties. Nanofibres are so thin that they can be easily damaged by human touch. In this study, we hypothesised that dyeing nanofibres with different colours from their textile supports would result in a colour difference upon their degradation, providing evidence that the composite has been touched and acting as a touch sensor. Two different methods were studied: directly inserting the dye into the polymer via electrospinning or creating a coloured liquid emulsion encapsulated by the polymer via electrospinning. Two black dyes were studied. Colour index (CI) Acid Black 194 was added directly to polyvinyl alcohol (PVA) as the polymer. Sage oil was used for CI Solvent Black 3. The nanofibre nets were conveniently electrospun on a white polyester fabric; the fabrics were then characterised by colour coordinate analysis, FTIR, and SEM. The results showed that the dyed solution in oil was encapsulated, and the black colour could only be observed when rubbed, whereas the dyed polymer showed a black colour that was removed when rubbed. Therefore, the hypothesis was confirmed, and both samples demonstrated the desired touch sensor behaviour.
纳米纤维网与织物载体的结合代表了一种有趣的复合材料，它能够赋予多种性能。纳米纤维非常细，以至于很容易被人的触摸损坏。在本研究中，我们假设将纳米纤维与织物载体染成不同颜色，在其降解时会产生颜色差异，从而提供复合材料被触摸的证据，并充当触摸传感器。研究了两种不同的方法：通过静电纺丝将染料直接插入聚合物中，或通过静电纺丝制备由聚合物包裹的有色液体乳液。研究了两种黑色染料。将色指数（CI）酸性黑194直接添加到作为聚合物的聚乙烯醇（PVA）中。鼠尾草油用于CI溶剂黑3。纳米纤维网方便地静电纺丝在白色聚酯织物上；然后通过颜色坐标分析、傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）对织物进行表征。结果表明，油中的染色溶液被包裹，只有在摩擦时才能观察到黑色，而染色的聚合物显示出摩擦时会消失的黑色。因此，该假设得到证实，两个样品均表现出所需的触摸传感器行为。
