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| Research on Sodium Bicarbonate Used in Deacidification of Ancient Books in Aqueous Phase |
| Received:July 13, 2021 |
| DOI：10.11980/j.issn.0254-508X.2022.01.007 |
| Key Words:ancient books deacidification sodium bicarbonate |
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| Abstract:The application of sodium bicarbonate in the aqueous phase deacidification towards the paper of Chinese ancient books was discussed by comparing the effects of pure water and sodium bicarbonate solution with different mass fraction on the pH value， color difference， folding resistance， tensile strength and aging resistance of paper surface. The results showed that sodium bicarbonate aqueous solution with mass fraction of 0.2% showed good deacidification effect and aging resistance on the paper of Chinese ancient books. The pH value of the paper surface was significantly increased from 3.96 to 7.75， the minimum color difference of the paper before and after aging was 0.41， the horizontal folding endurance of the paper was increased from 1.58 to 2.69， and the vertical folding resistance was increased from 1.64 to 2.86， which could effectively delay the aging speed of the paper. |
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