半胱氨酸-海藻酸钠-壳聚糖凝胶球的制备研究

摘要

用半胱氨酸、海藻酸钠为主要原料,结合氯化钙和壳聚糖制备复合凝胶球,并以凝胶球对铜离子的吸附能力为指标,对凝胶球制备的最佳条件进行了探讨和优化结果表明,该凝胶球体系中壳聚糖添加量对铜离子吸附能力影响最为显著,推测主要与壳聚糖对凝胶球吸附材料的有效包埋有关.恒定半胱氨酸质量浓度为1％,经过优化筛选得到凝胶球制备最佳方案,海藻酸钠2.0％、壳聚糖0.5％、氯化钙0.25％时,所制备的凝胶球对铜离子的吸附率达到87％.%The best preparation condition of gel beads synthesized with cysteine, sodium alginate, calcium chloride and chitosan was studied and optimized which based on the adsorption performance in copper iron. As revealed,chitosan exhibited significant effect on the absorption capacity which may relate with its effective embedding of the adsorption material. In addition,the absorption capacity of gel beads reached a maximum of 87% when the gel beads acquired with 2.0% SA,0.5% chitosan,0.25% calcium chloride and 1% cysteine.