ENSAIT-GEMTEX, F-59100 Roubaix, France.
Université Lille Nord de France, F-59000 Lille, France.
Sensors (Basel). 2020 Nov 28;20(23):6816. doi: 10.3390/s20236816.
Flavin mononucleotide (FMN) derived from Vitamin B2, a bio-based fluorescent water-soluble molecule with visible yellow-green fluorescence, has been used in the scope of producing photoluminescent and glow-in-the-dark patterned polyester (PET) nonwoven panels. Since the FMN molecule cannot diffuse inside the PET fiber, screen printing, coating, and padding methods were used in an attempt to immobilize FMN molecules at the PET fiber surface of a nonwoven, using various biopolymers such as gelatin and sodium alginate as well as a water-based commercial polyacrylate. In parallel, air atmospheric plasma activation of PET nonwoven was carried for improved spreading and adhesion of FMN bearing biopolymer/polymer mixture. Effectively, the plasma treatment yielded a more hydrophilic PET nonwoven, reduction in wettability, and surface roughness of the plasma treated fiber with reduced water contact angle and increased capillary uptake were observed. The standard techniques of morphological properties were explored by a scanning electron microscope (SEM) and atomic force microscopy (AFM). Films combining each biopolymer and FMN were formed on PS (polystyrene) Petri-dishes. However, only the gelatin and polyacrylate allowed the yellow-green fluorescence of FMN molecule to be maintained on the film and PET fabric (seen under ultraviolet (UV) light). No yellow-green fluorescence of FMN was observed with sodium alginate. Thus, when the plasma-activated PET was coated with the gelatin mixture or polyacrylate bearing FMN, the intense photoluminescent yellow-green glowing polyester nonwoven panel was obtained in the presence of UV light (370 nm). Screen printing of FMN using a gelatin mixture was possible. The biopolymer exhibited appropriate viscosity and rheological behavior, thus creating a glow-in-the-dark pattern on the polyester nonwoven, with the possibility of one expression in daylight and another in darkness (in presence of UV light). A bio-based natural product such as FMN is potentially an interesting photoluminescent molecule with which textile surface pattern designers may create light-emitting textiles and interesting aesthetic expressions.
黄素单核苷酸（FMN）来源于维生素 B2，是一种生物基的荧光水溶性分子，具有可见的黄绿光荧光，已用于生产发磷光和自发光的图案化聚酯（PET）非织造面板。由于 FMN 分子无法在 PET 纤维内扩散，因此采用丝网印刷、涂层和衬垫方法，试图将 FMN 分子固定在非织造布的 PET 纤维表面上，使用各种生物聚合物，如明胶和海藻酸钠以及水基商业聚丙烯酸酯。同时，对 PET 非织造布进行空气大气压等离子体活化，以改善负载 FMN 的生物聚合物/聚合物混合物的铺展和附着力。实际上，等离子体处理得到了更亲水的 PET 非织造布，降低了润湿性，并且处理后的纤维表面粗糙度降低，水接触角减小，毛细吸收增加。通过扫描电子显微镜（SEM）和原子力显微镜（AFM）探索了形态特性的标准技术。将每种生物聚合物和 FMN 结合的薄膜形成在 PS（聚苯乙烯）培养皿上。然而，只有明胶和聚丙烯酸酯允许 FMN 分子的黄绿光荧光在薄膜和 PET 织物上保持（在紫外（UV）光下观察到）。海藻酸钠则观察不到 FMN 的黄绿光荧光。因此，当等离子体活化的 PET 用含有 FMN 的明胶混合物或聚丙烯酸酯涂覆时，在存在紫外光（370nm）的情况下，获得了强磷光黄绿光发光的聚酯非织造布面板。使用明胶混合物进行 FMN 的丝网印刷是可能的。该生物聚合物表现出适当的粘度和流变行为，从而在聚酯非织造布上形成自发光图案，具有在日光下的一种表达和在黑暗中（在存在紫外光的情况下）的另一种表达的可能性。黄素单核苷酸等生物基天然产物可能是一种有趣的磷光分子，纺织表面图案设计师可以用其来创建发光纺织品和有趣的美学表达。
