以盐溶酶解法制得纳米级丝素蛋白(SFP)粉末,将其与医用聚氨酯(PU)共混,并通过还原法将纳米Ag引入SFP/PU体系,得到载银丝素/聚氨酯(SFP/PU/Ag)复合材料.UV确认了材料中纳米Ag是由SFP还原获得,硝酸银用量为SFP/PU体系质量的1％时最为合适.IR和DSC表明SFP/PU/Ag三种组分结合紧密,已通过氢键、配位络合等融为一体.抑菌试验结果显示SFP/PU/Ag中的抑菌性能通过纳米Ag达成,且低浓度的纳米Ag即具有了优越的抑菌性能,该复合材料具备医用抗菌材料的应用前景.
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