铜型无机抗菌材料的改性研究

Synthesis and characterization of modified Cu-inorganic antibacterial material

研究了添加电解质、表面活性剂和有机溶剂对铜型抗菌白炭黑性能的影响。采用溶胶-凝胶法制备出白炭黑载体,选用Cu2+作为抗菌离子,亚硝酸钠(电解质)、十二烷基苯磺酸钠(表面活性剂)和乙醇(有机溶剂)作为添加剂。运用ICP、粒度分布仪等对改性后的抗菌白炭黑进行表征,采用菌落计数法(菌种选用大肠杆菌)对改性后样品的抗菌性能进行研究。结果表明:通过改性,铜型抗菌白炭黑的抗菌离子含量和杀菌率均有所提高;粒径均一,粒度分布窄;热稳定性较好。

In this paper,We investigated the influence on the Cu-antibacterial White Carbon Black modified by surfactant,and organic solvent.The sol-gel method was used to prepare the White Carbon Black carrier.Cu2＋ was selected to be the antibacterial ion,and Sodium dodecylbenzene sulfonate（Surfactant）,Ethanol（organic solvent） was selected to be the modifiers.They were synthesized on the white carbon black carrier.These as-synthesized modified antibacterial materials were characterized by inductively coupled plasma,particle size measurement instrument and enumeration tests（Escherichia coli as experimental bacterium）.The results showed that the content of antibacterial ions and bacteriostasis rate of modified Cu-antibacterial white carbon black are higher than those for the common Cu-antibacterial white carbon black.In addition,the particle sizes of modified samples can be extended down with a narrow size distribution.Other advantages of modified Cu-antibacterial white carbon black are good thermal stability and light stability.