Morphological characterization of electrospun polystyrene microfibers for application as adsorbent membrane
Keywords:
adsorption, polymeric membrane, graphene oxideAbstract
Since wastewater treatment is of great interest to society, it is important to develop techniques that perform this treatment by removing pollutants such as dyes, pesticides, and metals. In this context, adsorption stands out as a promising method in the treatment of effluents, allied to this, as polymeric membranes considerably improve the ability to remove pollutants. Carbon-based additives, such as graphene oxide, have been used in the area of adsorption because they are an adsorbent capable of removing metallic ions and dyes. Thus, it is interesting to carry out studies of the polystyrene polymer with graphene oxide, aiming at the production of adsorbent membranes. For this, the production of polystyrene is analyzed, and then the graphene oxide is inserted into the polymeric matrix. Thus, polystyrene microfibers were produced using the electrospinning technique and analyzed morphologically using optical microscopy and scanning electron microscopy (SEM). With the help of ImageJ and OriginPro 8.5 software, a histogram of the frequency distribution of microfiber diameters and the normal curve was created. Through the obtained results it was observed that there was the production of microfibers with morphology and considerable quantity. From the histogram, it was noted that the microfibers had an average diameter of 5.73 µm.
Downloads
References
AN, J. et al. Polystyrene nanofibers as an effective sorbent for the adsorption of clonazepam: kinetic and thermodynamic studies. RSC advances, v. 12, n. 6, p. 3394-3401, 2022. https://doi.org/10.1039/D1RA08134A
ARAÚJO, T. M.; SINHA-RAY, S.; PEGORETTI, A.; YARIN, A. L. Electrospinning of a blend of a liquid crystalline polymer with poly(ethylene oxide): Vectran nanofiber mats and their mechanical properties. Journal of Materials Chemistry C, v. 1, n. 2, p. 351, 2013. https://doi.org/10.1039/C2TC00048B
COONEY, D. O. Adsorption design for wastewater treatment, CRC Pres. INC., Boca Raton, Florida, USA, 1999.
ELIASSON, J. The rising pressure of global water shortages. Nature, v. 517, n. 7532, p. 6-6, 2015. https://doi.org/10.1038/517006a
FANTINEL, L. A. Avaliação do uso de adsorventes a base de óxido de grafeno e celulose para a remoção de íons cromo hexavalente de soluções aquosas. 2021. Dissertação ( Mestrado) - . Universidade de Caxias do Sul, Caxias do Sul, RS, 2021.
FARIAS, L. M. S. Preparação e caracterização de fibras de poliestireno/óxido de grafeno aplicadas à adsorção do corante azul de metileno em tratamento de água. 2020. Dissertação (Mestrado) - Universidade Federal de Pernambuco, Recife, PE, 2020.
GENG, J. et al. Polyethyleneimine cross-linked graphene oxide for removing hazardous hexavalent chromium: Adsorption performance and mechanism. Chemical Engineering Journal, v. 361, p. 1497-1510, 2019. DOI: https://doi.org/10.1016/j.cej.2018.10.141
GOIS, B. H. S. Desenvolvimento e caracterização de nanofibras condutoras de poli(álcool vinílico) com poli(3,4-etilenodioxitiofeno): poli(estireno sulfonado) (PVA/PEDO:PSS) e polipirrol (PVA/PPy), obtidas por eletrofiação para aplicação em sensores. 2020. Dissertação (Mestrado) - Universidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudente, SP, 2020.
GORZA, F. D. S. et al. Electrospun polystyrene-(emeraldine base) mats as high-performance materials for dye removal from aqueous media. Journal of the Taiwan Institute of Chemical Engineers, v. 82, p. 300-311, 2018. DOI: https://doi.org/10.1016/j.jtice.2017.10.034
KYZAS, G. Z.; FU, J.; MATIS, K. A. The change from past to future for adsorbent materials in treatment of dyeing wastewaters. Materials, v. 6, n. 11, p. 5131-5158, 2013. DOI: https://doi.org/10.3390/ma6115131
NASCIMENTO, R. F. et al. Adsorção: aspectos teóricos e aplicações ambientais. Fortaleza: Imprensa Universitaria, 2020. Ebook. Disponível em:http://www.repositorio.ufc.br/handle/riufc/10267. Acesso em: 10 set.. 2023
RUTHVEN, D. M. Principles of Adsorption and Adsorption Process. [S.l.]: University of New Brunswick, 1984.
SILVEIRA, K. P. Produção de nanofibras adsorventes de poliestireno através de fiação por jato de ar. Porto Alegre: Universidade Federal do Rio Grande do Sul, 2018.
TRINDADE, L. C. Influência da extrusão no stress cracking de filmes de poliestireno. 2017. Dissertação (Mestrado) - Universidade Federal de Campina Grande, Campina Grande, 2017.
XUE, J. et al. Electrospinning and electrospun nanofibers: Methods, materials, and applications. Chemical reviews, v. 119, n. 8, p. 5298-5415, 2019. DOI: https://doi.org/10.1021/acs.chemrev.8b00593