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Study on Deacidification and Reinforcement of Aged Paper by Nanocellulose Collaborated in-situ Synthesized Calcium Carbonate |
Received:January 30, 2022 |
DOI:10.11980/j.issn.0254-508X.2022.05.008 |
Key Words:aged paper in-situ synthesis of calcium carbonate nanocellulose deacidification reinforcement |
Fund Project:国家自然科学基金面上项目(No.22178135);广州市科技计划特批项目(No.GZDD201808)。 |
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Abstract:A protection method for deacidification and reinforcement of aged paper by synthesized calcium carbonate in-situ and collaborated nanocellulose was proposed. The effects of different treatment methods and nanocellulose concentration on properties of aged paper were discussed. The results showed that the paper was treated by pressure atomization of 0.1 mol/L calcium propionate and 0.1 mol/L sodium carbonate aqueous solution to synthesize calcium carbonate in the paper in-situ for deacidification. Then the paper was enhanced by 1 wt% nanocellulose. After treatment, the pH value of the aged paper sample reached 8.40, the alkaline reserve was about 245 mmol/kg, the tensile index and the folding endurance increased by 19% and 109%, respectively, compared with the untreated sample. The treated paper also had excellent anti-aging and mold resistance. |
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