载银海藻酸钙纤的制备及其吸附释放性能研究.pdfVIP

载银海藻酸钙纤维的制备及其吸附释放性能研究 中文提要 载银海藻酸钙纤维的制备及其吸附释放性能研究 中文提要 为了解决海藻酸钙纤维载银技术中遇到的纤维发硬、稳定性不高、抗菌性能下 降以及无法大规模生产的问题，本文采用富集浸渍法制备得到载银海藻酸钙纤维， 研究了其吸附和释放性能以及机理，探讨了载银海藻酸钙纤维的制备工艺，并且对 纤维的性能进行了分析，为工业化大规模生产抗菌性能高、稳定性好的载银海藻酸 钙纤维提供了理论依据。 本文首先以耐尔纳米银溶液和海藻酸钙纤维为原料，采用富集浸渍法制备得到 载银海藻酸钙纤维，利用可见光分光光度法研究了纳米银溶液对海藻酸钙纤维的吸 附性能和吸附机理。 研究探讨出制备载银海藻酸钙纤维的最佳工艺条件：控制纳米银溶液pH 值为 o 7、浸渍温度为常温、浸渍时间20min 、烘干温度60 C，并采用80%(V/V)的乙醇水 溶液洗涤。 利用ICP-OES 研究了载银海藻酸钙纤维的银元素释放性能。浸渍中的银离子浓 度随溶液氧含量、银含量的增加而增大，随溶液pH 值、浸渍温度的提高而减小。 此外，载银海藻酸钙纤维还具有良好的持续释放性能，能够重复利用。 关键词：纳米银；载银海藻酸钙纤维；吸附性能；释放性能 作者：马建峰 指导老师：陈宇岳教授 I ABSTRACT Fabrication of Ag-loaded Calcium alginate fibers and Evaluation of Their Adsorption and Release Properties Fabrication of Ag-loaded Calcium alginate fibers and Evaluation of Their Adsorption and Release Properties ABSTRACT In order to solve the problems in the Ag-loaded technology of calcium alginate fibers such as alginate fibers became stiff,unstable and its antibacterial property decreased and can’t be mass produced. Ag-loaded calcium alginate fibers have been prepared via impregnation enrichment method.The adsorption and release performance and mechanism of Ag-loaded calcium alginate fibers were explored.Its preparation process was discussed.The properties of Ag-loaded calcium alginate fibers were analyzed. These results may provided theoretical base for mass producing Ag-loaded calcium alginate fibers with higher antibacterial property and better stability. Ag-loaded calcium alginate fibers have be