Micropatterning MoS2/Polyamide Electrospun Nanofibrous Membranes Using Femtosecond Laser Pulses

Autor(es)

Paula, Kelly T. ^[1] ; Mercante, Luiza A. ^{[2, 3]} ; Schneider, Rodrigo ^{[4, 2]} ; Correa, Daniel S. ^{[4, 2]} ; Mendonca, Cleber R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Embrapa Instrumentacao, Nanotechnol Natl Lab Agr LNNA, BR-13560970 Sao Carlos, SP - Brazil

^[3] Fed Univ Sao Carlos UFSCar, Ctr Exact Sci & Technol, Dept Mat Engn, PPG CEM, BR-13565905 Sao Carlos, SP - Brazil

^[4] Fed Univ Sao Carlos UFSCar, Ctr Exact Sci & Technol, Dept Chem, PPGQ, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PHOTONICS; v. 6, n. 1 JAN 4 2019.
• Citações Web of Science: 2

Resumo

The capability of modifying and patterning the surface of polymer and composite materials is of high significance for various biomedical and electronics applications. For example, the use of femtosecond (fs) laser ablation for micropatterning electrospun nanofiber scaffolds can be successfully employed to fabricate complex polymeric biomedical devices, including scaffolds. Here we investigated fs-laser ablation as a flexible and convenient method for micropatterning polyamide (PA6) electrospun nanofibers that were modified with molybdenum disulfide (MoS2). We studied the influence of the laser pulse energy and scanning speed on the topography of electrospun composite nanofibers, as well as the irradiated areas via scanning electron microscopy and spectroscopic techniques. The results showed that using the optimal fs-laser parameters, micropores were formed on the electrospun nanofibrous membranes with size scale control, while the nature of the nanofibers was preserved. MoS2-modified PA6 nanofibrous membranes showed good photoluminescence properties, even after fs-laser microstructuring. The results presented here demonstrated potential application in optoelectronic devices. In addition, the application of this technique has a great deal of potential in the biomedical field, such as in tissue engineering. (AU)

• Processo FAPESP: 17/12174-4 - Desenvolvimento de nanofibras poliméricas híbridas para aplicação na agricultura
• Beneficiário: Daniel Souza Corrêa
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/18468-2 - Metodologias de sínteses de nanoestruturas de dissulfeto de molibdênio (MoS2) e avaliação da sua potencial aplicação em sistemas de adsorção de poluentes
• Beneficiário: Rodrigo Schneider
• Modalidade de apoio: Bolsas no Brasil - Doutorado