文章摘要
张金伟,王瑶,温永汉,孙宏斌,黄雨锟,陈武勇.环境因素对纳米银体系稳定性的影响[J].精细化工,2020,37(12):
环境因素对纳米银体系稳定性的影响
Influence of Environmental Factors on Nano-Silver Colloid System
投稿时间:2020-06-04  修订日期:2020-09-07
DOI:
中文关键词: 纳米银  稳定性  温度  紫外光辐照  溶液pH
英文关键词: nano-sliver  stability  temperature  UV irradiation  solution pH
基金项目:2020年度广东省市场监督管理局资助科研项目(2020ZZ15),国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
张金伟 四川大学 scutanner@163.com 
王瑶 四川达威科技股份有限公司  
温永汉 广东省江门市质量计量监督检测所  
孙宏斌 广东盛方化工有限公司  
黄雨锟 广东省江门市质量计量监督检测所  
陈武勇 四川大学 wuyong.chen@163.com 
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中文摘要:
      为了提高纳米银抗菌剂在储存和运输过程中的稳定性,延长产品有效期,以通过苯扎溴铵为保护剂、硼氢化钠为还原剂制备的纳米银溶液为对象,分别在不同温度、紫外光照和初始pH条件下储存不同时间,期间以紫外-可见光谱和动态光散射法研究纳米银溶液粒径和Zeta电位的变化情况。结果表明,随着存储温度的升高,纳米银胶团更容易发生团聚,导致溶液稳定性降低;纳米银溶液经受紫外光辐照后,会出现粒径增加但Zeta电位绝对值降低的现象;提高纳米银溶液初始pH不利于胶体体系的稳定性,而降低初始pH有助于提高胶体体系稳定性。总之,为了提高纳米银溶液在存放过程中的稳定性,可以采取降低环境温度、避光和酸化等措施。本研究所得结果可作为纳米银溶液生产、运输和储存时选择合理工艺参数和材料的依据。
英文摘要:
      In order to improve the stability of nano-silver antibacterial agent during storage and transportation for prolonging the product validity, the nano-silver solution prepared by using benzalkonium bromide as protective agent and sodium borohydride as reductant was stored under different temperature, UV light irradiation and distinctive initial pH. UV-Vis and dynamic light scattering were used to measure the influence of these environmental factors on nano-silver particle size and Zeta potential. The results indicated the stability of nano-sliver decreased and the micelle trended to aggregation with storage temperature ascending. UV irradiation resulted in larger particle size but smaller absolute values of Zeta potential of nano-sliver solution. Higher initial pH of nano-silver had negative effect on the stability but lower pH benefited for the process. In short, reducing temperature, shielded from light and acidification could improve nano-silver stability. This study would provide reference for selecting appropriate technology parameters and materials during nano-silver manufacturing, transporting and storing.
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