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首页> 外文期刊>RSC Advances >Anti microbial corrosion properties of electrospun cellulose acetate nanofibers containing biogenic silver nanoparticles for copper coatings
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Anti microbial corrosion properties of electrospun cellulose acetate nanofibers containing biogenic silver nanoparticles for copper coatings

机译：铜涂料生物银纳米颗粒的耐电纺纤维素醋酸纤维纳米纤维的抗微生物腐蚀性能

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摘要

Nanofibers with inorganic nanoparticles are novel hybrid nanocomposites that have great potential in various areas. In the present study, cellulose acetate nanofibers (CA-Nf) loaded with biogenic silver nanoparticles were prepared and characterized. In situ synthesis of silver nanoparticles was accomplished using a bacteria free solution as a reducing agent. Nanofibers incorporated with silver nanoparticles were fabricated using the electrospinning technique. Upright microscopy and SEM micrographs depicted that the CA-Nf coatings consist of dense and compact entangled nanofibers that completely cover the copper surface. Corrosion measurements were performed by potentiodynamic polarization measurements and electrochemical impedance spectroscopy (EIS) techniques on the bare copper and CA-Nf and CA-Nf_5% AgNp coated copper surfaces in artificial seawater (ASW) and Escherichia coli ATCC 13883 inoculated solutions. Weight loss and electrochemical corrosion test results revealed that the CA-Nf-coated copper had greater corrosion resistance than bare copper. The additional electrospun CA-Nf_5% AgNp coating also had greater antibacterial behavior toward model biofilm bacterium Pseudomonas aeruginosa than uncoated copper specimens. Therefore, this nanofiber with AgNps was demonstrated as an efficient anticorrosive material in both corrosive and biocorrosive marine solutions.
机译：具有无机纳米颗粒的纳米纤维是新的杂化纳米复合材料，其在各种区域具有很大的潜力。在本研究中，制备醋酸纤维素纳米纤维（Ca-NF），并制备与生物酰胺纳米颗粒负载并表征。原位合成银纳米颗粒，使用细菌的游离溶液作为还原剂完成。使用静电纺丝技术制造与银纳米颗粒的纳米纤维。直立显微镜和SEM显微照片描绘了CA-NF涂层，该涂层由完全覆盖铜表面的致密和紧凑的缠结纳米纤维组成。通过在人造海水（ASW）中的裸铜和Ca-NF和Ca-NF_5％AgNP涂覆的铜表面上进行腐蚀测量和电化学阻抗光谱（EIS）技术和Ca-NF_5％AgNP涂覆的铜表面和大肠杆菌接种溶液。减肥和电化学腐蚀试验结果表明，Ca-NF涂覆的铜比裸铜具有更大的耐腐蚀性。额外的Electrom ow Ca-NF_5％AgNP涂层还对模型生物膜细菌假单胞菌铜绿假单胞菌具有更大的抗菌性能而不是未涂覆的铜标本。因此，在腐蚀性和生物腐蚀性海洋溶液中，该具有AgNP的纳米纤维是一种有效的防腐蚀材料。

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