引用本文:
邵志会, 汪琴, 王爱勤. N-羧丁基壳聚糖的吸湿性和保湿性[J]. 应用化学,
2002, 19(11): 1091-1093.
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.
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.
N-羧丁基壳聚糖的吸湿性和保湿性
摘要:
透明质酸具有良好的吸湿、保湿性能,被认为是"理想的天然保湿因子"。但是从动物组织中提取的产品,工艺复杂,成本较高;而发酵法制备的产品,还完全达不到天然提取产品的理化性能[1]。甲壳素脱乙酰基后得到的壳聚糖具有一定的水分调节能力[2]。但壳聚糖有较强的分子间氢键[3],只能溶于有机或无机酸的溶液中,而不溶于水,从而限制了它在日化方面的广泛应用。为此,近年来已制备了一系列水溶性壳聚糖衍生物[4,5],其中与透明质酸具有相近结构的羧甲基壳聚糖的研究报道较多[5~7],但在相近分子量时仍达不到透明质酸的保湿效果[7]。为了进一步提高壳聚糖衍生物的保湿性能,本文制备了水溶性N-羧丁基壳聚糖,并与透明质酸进行了吸湿性和保湿性的比较研究。
English
Moisture-absorption and Moisture-retention Capacity of N-Carboxybutyl-chitosan
Abstract:
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.
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Key words:
- chitosan
- / N-carboxybutyl-chitosan
- / moisture-absorption
- / moisture-retention
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