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Modification of Calcium Carbonate by Chitosan-Maleic Anhydride and Its Effect on Paper Properties
Received:July 16, 2021  
DOI：10.11980/j.issn.0254-508X.2022.02.004
Key Words:calcium carbonate  chitosan  maleic anhydride  modification  paper
Fund Project:“十三五”国家重点研发计划（2017YFD601005）。
Author NameAffiliationPostcode
CHENG Xinlei College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
CHENG Yutong College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
LIN Junkang College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
WANG Dong College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
LUO Xiaolin College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
HUANG Liulian* College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
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Abstract:In this study， maleic anhydride and chitosan were used as coupling agent and modifier， respectively， to modify PCC so as to improve its dispersibility and usability as paper fillers. The characterizations of Fourier transform infrared spectroscopy （FT-IR）， X-ray photoelectron spectroscopy （XPS）， and contact angle indicated that the modification of chitosan towards PCC was successful and the modified PCC had good dispersibility， small average particle size， and high Zeta potential. Compared with unmodified PCC， chitosan-maleic anhydride modified PCC possessed increased retention rate （76.8%） when the dosage was 5%， and improved the physical strength （bursting strength， tearing strength， and tensile index increased by 9%， 11%， and 5%， respectively） when the dosage was 10%， opacity， and whiteness of paper sheets.
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