材料科学
煅烧
扇贝
复合材料
扫描电子显微镜
极限抗拉强度
硝酸银
化学工程
光催化
复合数
核化学
乙烯-醋酸乙烯酯
傅里叶变换红外光谱
聚合物
催化作用
有机化学
化学
共聚物
工程类
生物
生态学
作者
Marakkattupurathe Manoj,O. Manaf,KM Muhammad Ismayil,A. Sujith
标识
DOI:10.1177/0095244321996396
摘要
Poly(ethylene-co-vinyl acetate) [EVA] and silver-calcined scallop shell powder (Ag-CS) based composite (EVA/Ag-CS) films were synthesized by wet phase inversion method. The composite films were characterized by Fourier transforms infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, field emission scanning electron microscopy (FE-SEM), water sorption test, and contact angle measurement. The functional properties such as photocatalytic and antibacterial properties were also studied in detail. Calcined scallop shell powder, which mainly contains CaO and Ca(OH) 2 was prepared from a naturally occurring scallop shell by the sol–gel method. Silver-calcined scallop shell powder was prepared by the reduction of silver nitrate solution in the presence of calcined scallop shell powder. It was found that composite with a 6 wt% Ag-CS showed 5% better tensile strength and improved thermal properties than the pristine EVA. The incorporation of Ag-CS imparts photocatalytic property to EVA polymer matrix. Kinetics study showed that the photocatalytic process takes place through a pseudo-first-order manner. The antibacterial study of the prepared samples was tested by the agar-disc diffusion method. The composites are found to be good antibacterial material against Staphillococus aureus and Escherichia coli bacteria.
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