| Summary: | 碩士 === 國立嘉義大學 === 林產科學系研究所 === 97 === Five common plant dyes: madder, sappanwood, turmeric, gardeniae fructus, pagoda tree bud were used in this study. The dyestuffs of plant dyes were extracted with hot water and dyed on the cotton specimens. Using HPLC-DAD to separate and identify the dyestuffs and to compare the difference of components before and after Q.U.V. aging. With the hope that HPLC could be used in the determination of plant dye and its degree of deterioration, besides, a 3D fluorescence spectra with non-destructive identification was used and according its 3D contour plot to identify the plant dyes, to obtain the knowledge of materials and background about painting and coloring textile and further, provide invaluable insights for the restoration and preservation of historical relics.
The effects of different mordants on plant dyeing varied as follows: Stannous Acetate would result in brilliant color; while the plant dyes treated with Copper Acetate could achieve better light fastness. Plant dyes are sensitive to light, they show significant color differents after aging with UV light. High Performance Liquid Chromatography with Diode-Array Detector has been used for the separation and identification of plant dyes, and the absorbance of plant dye will reduce after aging. 3D fluorescence contour plot also could achieve the identification of plant dyes. Form the IR spectrum, one could understand is the changes in the functional groups of compounds, -OH、-CH2、-CH3 or R-COOH groups will increase after aging, on the contrary, C=C bond will reduce after aging.
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