摘要
为了提高聚乙烯亚胺(PEI)还原制备纳米银的能力,增加纳米银水溶液稳定性,采用化学接枝改性PEI,并探讨改性聚乙烯亚胺(MPEI)还原、控制纳米银生成的机制,实现对棉织物的抗菌整理。红外光谱分析结果表明,通过化学反应,成功将羧酸根离子和酰胺键引入PEI长链分子;X射线衍射、紫外-可见光光谱和粒径测试结果表明,MPEI能高效还原制备纳米银,所制备的纳米银溶液在1个月内保持稳定;透射电子显微镜测试结果表明,MPEI制备的纳米银尺寸呈双峰分布,生成2 nm左右的超小型纳米颗粒和10 nm左右的纳米颗粒;在常温常压条件下,棉织物通过MPEI/纳米银溶液浸渍整理,得到的抗菌棉织物对大肠杆菌和金黄色葡萄球菌的抑菌率达到95%以上。
In order to improve the reduction capability of nano-silver by polyethyleneimine （PEI） and stabilize the nano-silver solution, a modification of PEI by chemical grafting was described in this paper. The mechanism of modified-polyethyleneimine（MPEI） was proposed, and its antibacterial application in finishing of cotton fabrics was studied. According to FT-IR, the carboxylic acid ion and the amide bond were introduced into PEI successfully by chemical reactions. XPS, UV-visible and particle size analysis showed that MPEI can not only synthesize nano-silver efficiently, but also stabilize nano-silver solution for a month at least. TEM test indicated that nano-silver synthesized by MPEI contained ultra-small spherical nanoparticles with an average diameter of 2 nm and larger particles with an average diameter of 10 nm. Under conditions of room temperature and atmosphere pressure, the bacterial reduction rates of cotton fabrics treated with MPEI/nano-silver solution against Escherichia coli and Staphylococcus aureus reached 95 %
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2016年第9期94-99,共6页
Journal of Textile Research
基金
苏州市社会发展支撑项目(ZXS2012008)
关键词
改性聚乙烯亚胺
纳米银
棉织物
抗菌整理
modified-polyethyleneimine
nano-silver
cotton fabric
antibacterial finishing
