草酸钙晶体形态在中国传统手工纸纤维鉴别中的应用

Application of the calcium oxalate crystal morphology to the fiber identification of traditional Chinese handmade paper

纤维鉴别是纸质文物、古籍与档案保护中必要的基础工作,对于修复方案的制定、修复材料的选择等具有重要的指导意义。草酸钙晶体是植物中普遍存在的一种后含物,其形态与植物种群具有密切关系。本工作以具有代表性的传统手工纸为研究样品,综合使用衰减全反射傅里叶变换红外光谱法、X射线衍射法、扫描电子显微镜、光学显微镜和偏光显微镜观察等多种仪器分析手段,系统研究各类纸纤维中草酸钙晶体的形态特征,进而探讨草酸钙晶体形态在中国传统手工纸纤维鉴别中的应用价值,以进一步完善现有纤维鉴别方法体系。

Fiber identification is a necessary basic task for the conservation of paper-made relics,ancient books and documents,and is of great importance in making conservation plans and selecting repair materials.Calcium oxalate crystals are common ergastic substances in plants,and their forms are much related to the categories of plants.In this study,calcium oxalate crystals in the fibers of traditional handmade paper were observed using attenuated total reflection-Fourier transform infrared(ATR-FTIR)spectrometry,X-ray diffraction(XRD),scanning electron microscopy(SEM),optical microscopy(OM)and polarized light microscopy(PLM),to characterize calcium oxalate crystals in each kind of paper.Furthermore,the possibilities of adding the polymorphism of calcium oxalate crystals to the fiber identification system are also discussed as a means of improving the methodology of fiber identification.