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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）。
Author NameAffiliationPostcode
QI Shi State Key Lab of Pulp and Paper Engineering， Guangzhou Lingnan Literature Preservation Research Center， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
REN Junli* State Key Lab of Pulp and Paper Engineering， Guangzhou Lingnan Literature Preservation Research Center， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
CAO Xian State Key Lab of Pulp and Paper Engineering， Guangzhou Lingnan Literature Preservation Research Center， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
HE Bei State Key Lab of Pulp and Paper Engineering， Guangzhou Lingnan Literature Preservation Research Center， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
FAN Huiming State Key Lab of Pulp and Paper Engineering， Guangzhou Lingnan Literature Preservation Research Center， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
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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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