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Citation: SHAO Zhi-Hui, WANG Qin, WANG Ai-Qin. Moisture-absorption and Moisture-retention Capacity of N-Carboxybutyl-chitosan[J]. Chinese Journal of Applied Chemistry, ;2002, 19(11): 1091-1093. shu

Moisture-absorption and Moisture-retention Capacity of N-Carboxybutyl-chitosan

1.
State Key Laboratory of Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000

Corresponding author: WANG Ai-Qin,
Received Date: 5 February 2002
Available Online: 10 June 2002

Water-soluble N-carboxybutyl-chitosan was synthesized by reacting chitosan with levulinic acid and sodium borohydride. The moisture-absorption and moisture-retention capacity of chitosans with different degree of deacetylation and different molecular weight and N-carboxybutyl-chitosan were studied. The results indicated that chitosan with degree of deacetylation 50% had the best ability of moisture-absorption and retention and N-carboxybutyl-chitosan showed a quite same moisture-absorption capacity to that of hyaluronic acid when their molecular mass was at 5.0×10⁵ level.
- chitosan,
- N-carboxybutyl-chitosan,
- moisture-absorption,
- moisture-retention
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