宣紙耐光性之研究

宣紙於保存及展示期間很容易受光之影響而産業劣化，失去其不朽之價傎。本試驗之目的除了比較市面上所能買到六種宣紙的耐光性外，並研究不同燈源對宣紙之影響。照光試驗包括日光燈照射、鎢絲燈照射、加速耐光試驗箱及一般室內使用環境四種。所試驗的宣紙性質包括表面著色的變化、PH值變化、纖維素黏度之變化、纖維素化學成分之改變及抗張指數。試驗結果得知，宣紙在各種燈源照射下，纖維素均發生酸化作用，産生羧酸類及羰類衍生物，使得宣紙表面之pH值降低，表面顔色亦出現黃化的色變。在所測試的燈源中，日光燈最易引起宣紙劣化。六種宣紙在不同燈源照射下，所産生的各種性質變化，在文中亦一一比較與討論。

關鍵字

宣紙；耐光性；色變；酸化作用；黏度；抗張指數

並列摘要

The photostability of chinese writing and painting paper closely relates to the conservation and preservation of chinese painting and chinese calligraphy. However, the information about this is very limited and inadequate. Therefore, the objectives of this research are to investigate the effects of light on the properties of chinese writing and painting papers, and to compare the photostability of six chinses writing and painting papers made by different made by different papermakers. The chinses writing and painting papers are exposed separately to four different conditions including at indoor ambient condition, under tungsten lamps, under fluorescent lamps and in UVCON accelerated chamber. The photostability of chinese writing and painting papers is evaluate by the tensile of the properties such as surface color, PH value, fiber viscosity, chemical composition and tensile strength index. The experimental results reveal that discoloration and acidification occur on the chinese writing and painting paper surfaces, and that fluorescent lamp induces the most severe deterioration on chinese writing and painting paper surface. The effects of different exposure conditions on the changes of properties are also compared and discussed in detail in this paper.

並列關鍵字

chinese writing and painting paper ； discoloration ； photostability ； viscosity ； chemical composition ； tensile strength index

國際替代計量

宣紙耐光性之研究

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