Development and Characterization of Nanosilver-Mediated Electrospun Silk Fibers

• Published in: Journal of Natural Fibers
• Main Authors: Madiha Yousaf, Zulfiqar Ali Raza, Muhammad Aslam, Muhammad Shoaib ur Rehman
• Format: Article
• Language: English
• Published: Taylor & Francis Group 2022-11-01
• Subjects: electrospinning; electrospun; nanofibers; silk; silk fibroin; silver nanoparticles
• Online Access: http://dx.doi.org/10.1080/15440478.2022.2111626

Herein, silk fibroin (SF) extract was blended with silver nanoparticles (SNPs) to develop electrospun nanofibers whereas polyethylene oxide (PEO) mediated as a template to support the network. The electrospinning process was tuned to get beadles uniform nanofibers. The prepared SNPs and SF were characterized for z-average (mean hydrodynamic diameter), zeta potential, and UV-visible (vis.) absorbance; and the electrospun nanofibers for surface morphology, elemental analysis, crystalline properties, Fourier transform infrared spectroscopy (FTIR), surface wettability and thermal analysis. The results indicate that the z-average of SNPs was 50±5 nm with the polydispersity index (PDI) of 0.686 and that of SF as 450±20 nm with the PDI of 0.538, and respective zeta potential being -35±3 and -20±2 mV. The UV-vis. spectra expressed absorbance peaks for SNPs at 400 nm and SF at 279 nm. The surface morphology of composite nanofibers expressed an even mediation of SNPs within the composite nanofibers of uniform diameter. The FTIR results indicated weak intermolecular interactions between SF and the SNPs. The XRD patterns expressed that the crystallinity of resultant composite nanofibers increased on mediation with SNPs. The incorporation of SNPs made the nanofibrous network more hydrophobic and thermally stable.摘要在此, 丝素蛋白 (SF) 提取物与银纳米颗粒 (SNP) 混合以开发电纺纳米纤维, 而聚氧化乙烯 (PEO) 作为模板来支持网络.整静电纺丝工艺以获得均匀的纳米纤维。对制备的SNP和SF的z-平均值 (平均流体动力学直径) 、zeta电位和紫外-可见吸收率进行了表征; 以及用于表面形态、元素分析、结晶性能、傅里叶变换红外光谱 (FTIR) 、表面润湿性和热分析的电纺纳米纤维. 结果表明, SNP的z-平均值为50±5nm, 多分散指数 (PDI) 为0.686, SF的z-均值为450±20nm, PDI为0.538, 各自的zeta电位分别为-35±3和-20±2mV. 紫外可见光谱. 光谱表示400 nm处SNP和279 nm处SF的吸光度峰. 复合纳米纤维的表面形态表现出均匀直径的复合纳米纤维内SNP的均匀介导. FTIR结果表明SF和SNP之间的分子间相互作用较弱. XRD图谱表明, 在SNP的解下, 所得复合纳米纤维的结晶度增加. SNP的加入使纳米纤维网络更疏水和热稳定