Electrospinning is an inexpensive and versatile technique for fabricating micro- and nano- scaled fibers. There have been limited attempts to employ it for the fabrication of thermochromic (TC) fibers, and the fabrication of a three-component (dye, developer, and solvent) TC material has required the use of a more complicated coaxial electrospinning technique. Herein, a simple and novel method for creating thermochromic fibers by electrospinning single strands of poly (methyl methacrylate) (PMMA) with embedded thermochromic powder of a polymer encapsulated three-component system was employed. Unlike past leuco dye-based thermochromic fibers, an unmodified syringe tip can be used for the spinning process and only one flow rate needs to be determined. A solution of solvent (either N-dimethylformamide or chloroform), PMMA, and a commercially available black thermochromic powder was prepared and spun using a custom-made electrospinning apparatus. The spun fibers exhibited a clear color transition from grey to white and had average diameters of 2.53 µm and 1.96 µm for chloroform and N-dimethylformamide based fibers, respectively. The fibers were characterized by scanning electron and optical microscopy to determine their morphology, Fourier transform infrared spectroscopy to determine their chemical composition, and differential scanning calorimetry and thermogravimetric analysis to characterize their thermal properties.

电纺丝是用于制造微米级和纳米级纤维的廉价且通用的技术。已经进行了有限的尝试来将其用于制造热变色（TC）纤维，并且三组分（染料，显影剂和溶剂）TC材料的制造要求使用更复杂的同轴电纺技术。在本文中，采用了一种简单新颖的方法来制造热致变色纤维，该方法是通过将聚合物包裹的三组分体系的嵌入的热致变色粉末静电纺丝聚甲基丙烯酸甲酯（PMMA）单股纤维而制成的。与过去基于无色染料的热致变色纤维不同，未经修饰的注射器头可用于纺丝工艺，只需确定一种流速即可。溶剂（N-二甲基甲酰胺或氯仿），PMMA，制备市售的黑色热致变色粉末，并使用定制的静电纺丝设备纺丝。纺制的纤维显示出从灰色到白色的清晰的颜色过渡，并且基于氯仿和N-二甲基甲酰胺的纤维的平均直径分别为2.53 µm和1.96 µm。通过扫描电子和光学显微镜确定纤维的形态，用傅立叶变换红外光谱确定其化学成分，并用差示扫描量热法和热重分析法表征纤维的热性能。氯仿和N-二甲基甲酰胺基纤维分别为96 µm。通过扫描电子和光学显微镜确定纤维的形态，用傅立叶变换红外光谱确定其化学成分，并用差示扫描量热法和热重分析法表征纤维的热性能。氯仿和N-二甲基甲酰胺基纤维分别为96 µm。通过扫描电子和光学显微镜确定纤维的形态，用傅立叶变换红外光谱确定其化学成分，并用差示扫描量热法和热重分析法表征纤维的热性能。