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利用O-羧甲基壳聚糖同时具有羧基、羟基和氨基等活性基团的特点,用柠檬酸为交联剂,可以使其发生聚合反应,生成不溶于水的高分子聚合物。通过对聚合产物产率的测算与分析,探讨了O-羧甲基壳聚糖在柠檬酸水溶液中的交联工艺参数对聚合物产率的影响。通过一系列单因素和正交试验,确定了最佳聚合工艺条件为:O-羧甲基壳聚糖溶液质量浓度为20 g/L,柠檬酸溶液质量浓度为40 g/L,反应pH值为6.0,反应温度为25℃,反应时间为10 min。
The use of O-carboxymethyl chitosan at the same time with the carboxyl, hydroxyl and amino groups such as the characteristics of the use of citric acid as a cross-linking agent, you can make the polymerization reaction, resulting in water-insoluble polymer. Through the calculation and analysis of the yield of the polymerization product, the effect of cross-linking process parameters of O-carboxymethyl chitosan in the citric acid aqueous solution on the yield of the polymer was discussed. Through a series of single factor and orthogonal experiments, the optimum polymerization conditions were determined as follows: O-carboxymethyl chitosan solution concentration of 20 g / L, citric acid solution concentration of 40 g / L, the reaction pH 6.0, reaction temperature 25 ℃, reaction time 10 min.