【摘要】 金属离子型无机抗菌剂具有安全性好、抗菌广谱、时效长和耐热等许多优良性能,在许多领域有广泛的应用价值。金属离子型无机抗菌剂由金属抗菌离子和无机载体材料组成,其抗菌性能与载体材料对抗菌金属离子的吸附量有关。本文初步研究了对海泡石进行酸改性及用海泡石载抗菌锌离子(Zn2+)的两种工艺方式对海泡石结构及载Zn2+量的影响。通过原子吸收发射光谱、X射线衍射、扫描能谱电子显微镜及傅立叶变换红外光谱等技术的分析表明,用体积浓度为5%的HCL,在70℃温度下对海泡石进行酸处理,在提高海泡石纯度,分散海泡石纤维束、使海泡石结构中孔隙扩大,进而达到更多载入Zn2+目的等方面都是十分必要和有效的方法;采用干湿循环方式将Zn2+载于海泡石能提高海泡石的载Zn2+量,但干湿循环方式操作更复杂,能耗更大,应视具体情况酌情选择使用。更多还原

【Abstract】 The inorganic anti-bacterial material of metal ions type is characterized by high security,great anti-bacterial capability,wide working temperature range and heat-enduring properties,and hence it is used in many fields with extensive application value.It consists of two parts,i.e.,anti-bacterial metal ions and inorganic carrier materials,and its anti-bacterial properties bear a relationship with the adsorption capacity of metal ions on the carrier material.This paper made a tentative study of two different processes,i.e.,the acid modification of sepiolite and sepiolite loading anti-bacterial Zn2+,observing the influences of these two means on the structure of sepiolite and the amount of Zn2+.AAS,XRD,SEM/EDX,FT-IR were used to characterize the Zn2+-loading sepiolite,The results show that the utilization of 5% HCl at the temperature of 70℃ to treat sepiolite is a very necessary and effective means for improving the purity,scattering fiber bundles and expanding the pore space of sepiolite so as to increase the capacity of Zn2+-loading.Dry wet cycle way could be employed to enhance the capacity of loading Zn2+,but its complex operation and greater energy consumption hinder it from further use.Therefore,an appropriate choice is necessary.更多还原