In order to explore the effects of illumination,humidity and carbon dioxide volume fraction on paper cultural relics in terms of diseases,an experimental system for environmental parameters and diseased paper samples was established,and a fiber-optic spectral sensor and its detection system were also constructed.The experimental results show that 1)the adverse effects of blue-violet light and red light on the paper samples were stronger than that of yellow light—the paper samples irradiated by the blue-violet light and red light suffered from the photochemical decomposition of cellulose due to a thermal effect;2)after the treatment at low humidity,the cellulose of paper samples shrank;after the treatment at high humidity,a large number of molds grew on the sample surface,causing corrosion and biochemical reactions;3)the acid hydrolysis reaction of cellulose in paper samples under the action of high volume fraction of carbon dioxide caused the morphological characteristic changes of paper samples,and decrease of both tensile strength and thermal stability.After the diseases of the paper samples occurred,the output signal of the fiber optic spectral sensor showed a characteristic absorption peak at 275 nm;when mold microorganisms were attached to the paper sample surface,the characteristic absorption peak shifted to 300 nm.The results highlight that a temperature of 26 ℃,yellow light,relative humidity of 55％,and a low volume fraction of carbon dioxide were beneficial to the preservation of paper cultural relics.
关键词
纸质文物/光照/湿度/C02体积分数/病害作用/光纤光谱传感器
Key words
Paper cultural relics/Illumination/Humidity/Carbon dioxide volume fraction/Adverse effect/Fiber-optic spectral sensor
维普
万方数据