【摘 要】
：
在纳米SiOx表面通过先接枝高分子聚乙烯亚胺(PEI)长链,再用卤代烷烷基化成高分子季铵盐,制得一种新型的纳米SiOx粉体。抗菌实验表明,采用此工艺制得的纳米SiOx粉体对革兰氏阳
【机 构】
：
宜宾学院生物工程系,贵州大学化学工程学院,
论文部分内容阅读
在纳米SiOx表面通过先接枝高分子聚乙烯亚胺(PEI)长链,再用卤代烷烷基化成高分子季铵盐,制得一种新型的纳米SiOx粉体。抗菌实验表明,采用此工艺制得的纳米SiOx粉体对革兰氏阳性菌、革兰氏阴性菌、酵母菌和霉菌均有较好的抗菌性。对细菌的临界抗菌浓度为1.0mg/ml。热处理和洗涤实验表明抗菌纳米SiOx具有良好的耐热性能和稳定性。
On the surface of nano-SiOx, a new type of nano-SiOx powder was prepared by first grafting polyethyleneimine (PEI) long chain and alkylating it with alkyl halides to polymer quaternary ammonium salt. Antibacterial experiments show that the nano-SiOx powder obtained by this process has good antibacterial activity against Gram-positive bacteria, Gram-negative bacteria, yeasts and molds. The critical antibacterial concentration for bacteria is 1.0 mg / ml. Heat treatment and washing experiments show that antimicrobial nano-SiOx has good heat resistance and stability.
其他文献
Amphiphilic fluorosiloxane graft copolymers with a poly(dimethylsiloxane) (PDMS) backbone, a hydrophobic fluorosiloxane side-chain and three hydrophilic polyeth
Two homologous series of bent-shaped molecules composed of low bent-angle naphthalene central core and long alkoxy tail or alkylthio tail, N(1,7)-n-OPIMB and W(
Background Liver cirrhosis is the fatal consequence of chronic hepatitis, making early diagnosis of liver cirrhosis critical. Liver biopsy is still the standard
A novel kind of supported combined liquid membrane (SCLM) has been studied for the Gd(Ⅲ) transfer. SCLM contained polyvinylidene fluoride membrane (PVDF) as th
介绍聚合物分散液晶技术新进展,应用光学原理对液晶微滴增强散射问题进行研究,提出液晶微滴最佳间距判据,液晶微滴间隔处聚合物材料光学厚度满足增反膜条件;提出液晶微滴最佳
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
Background Clinical research encompasses a wide variety of disciplines. Traditional Chinese medicine (TCM) and natural product research have made great contribu
Background Invasive pulmonary mycosis is the most common type of invasive fungal infection.It is often severe and difficult to treat,and is accompanied by high
为研究水溶液中五氯酚的γ辐照降解效果,该文测定了辐照前后的五氯酚、氯离子浓度以及生物毒性的变化情况,考察了五氯酚初始浓度对其辐解效果的影响。结果表明:γ辐照可有效
To study the Very Fast Transient Over-voltage(VFTO)distribution in transformer windings in gas insulated substation(GIS),a systematic methodology based on S-par