Abstract

Abstract Influenced by the spreading route of Buddhism, palm leaf manuscripts in China are mostly distributed in Yunnan province and Tibet. The ink of palm leaf manuscripts from Yunnan province is left in the incisions, while the ink of palm leaf manuscripts from Tibet is written on the surface. The two inks have different compositions and application techniques, which may lead to varying degrees of flaking and ink loss. Application technique and ink composition are crucial for conservation measures. In this study, non-destructive analysis techniques including a portable digital microscope, Fourier transform infrared spectroscopy (FTIR), and X-ray fluorescence (XRF) were undertaken to analyse the characteristics and preservation condition of inks applied with different techniques on palm leaf manuscripts. Morphologies indicated that the interaction of ink and support influence the type and extent of ink loss. FTIR and XRF results showed significant differences in ink composition between incised palm leaf manuscripts from Yunnan and surface-written manuscripts from Tibet. Manuscripts from different periods within the same region exhibited similarities in ink composition. This paper significantly contributes to understanding properties of inks, offering an essential reference for ink consolidation.

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