丝素/羧甲基壳聚糖复合材料的制备及其在丝绸文物加固中的应用

Prepare of silk fibroin/carboxymethyl chitosan composites and its Hardening protection applications in silk cultural relics

摘要:

为了对脆弱丝绸文物进行保护修复，延长其寿命，本研究以丝素蛋白（SF）、羧甲基壳聚糖（CMCS）为原料，谷氨酰胺转氨酶为交联剂，制备丝素/羧甲基壳聚糖复合材料（SF/CMCS），并将其应用于老化丝绸加固保护。选用傅里叶变换红外光谱（FT-IR）、X-射线衍射仪（XRD）、测色配色分光光度计、扫描电镜（SEM）及伺服高低温控制拉伸机对老化丝绸加固前后效果进行表征。结果表明，与老化丝绸相比，SF/CMCS加固丝绸的颜色无明显变化，物理机械性能有明显提升，抗张强度和断裂伸长率分别提升了379.12%、14.12%%，且有一定的抗菌性。

Abstract:

In order to protect and repair fragile silk cultural relics and prolong their life, try to study a new type of biological material to strengthen and protect aging silk, and explore the strengthening mechanism. In this study, silk fibroin/carboxymethyl chitosan (SF/CMCS) composites were prepared using silk fibroin (SF) and carboxymethyl chitosan as raw materials, and transglutaminase as cross-linking agent, and were applied Reinforced protection from aged silk. Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometer (XRD), colorimeter, scanning electron microscope (SEM) and servo tensile tester were used to characterize the effect of aged silk before and after reinforcement. The research results show that the SF/CMCS composite material has good compatibility with the aged silk, the appearance of the reinforced silk has no obvious change, the mechanical properties are significantly improved, and it has certain antibacterial properties. It is proved that SF/CMCS composite material is a safe and effective reinforcement material, which lays a certain foundation for the protection and restoration of silk cultural relics in the later period.