论文部分内容阅读
以丙烯酸甲酯(MA)和甲基丙烯酸缩水甘油酯(GMA)为单体、乙二醇二甲基丙烯酸酯(EGDMA)为交联剂、十二烷基硫酸钠(SDS)为乳化剂,改变单体进料n(GMA)/n(MA)值,合成了5种带环氧基的有机纳米聚合物(ONPs),ONPs与三甲胺盐酸盐反应制得阳离子化聚合物(CONPs)。利用红外光谱(FTIR)、粒径分析、电荷密度测定和热重分析(TGA)对ONPs与CONPs进行了表征;采用显微镜观察与烧瓶振荡法研究了CONPs对大肠杆菌和金黄色葡萄球菌的抗菌性。结果表明,CONPs是带有正电荷的微粒;ONPs与CONPs的热稳定性良好;CONPs的平均粒径和抗菌性随配方中GMA用量增大而增加。
Using methyl acrylate (MA) and glycidyl methacrylate (GMA) as monomers, ethylene glycol dimethacrylate (EGDMA) as crosslinking agent, sodium dodecyl sulfate (SDS) as emulsifier, Five kinds of organic nano-polymers (ONPs) with epoxy groups were synthesized by changing the monomer feed n (GMA) / n (MA) value. ONPs were reacted with trimethylamine hydrochloride to obtain cationic polymers (CONPs) . ONPs and CONPs were characterized by Fourier transform infrared spectroscopy (FTIR), particle size analysis, charge densitometry and thermogravimetric analysis (TGA). The antibacterial activity of CONPs against Escherichia coli and Staphylococcus aureus was investigated by microscope and flask shaking method . The results showed that CONPs were positively charged microparticles. The thermal stability of ONPs and CONPs was good. The average particle size and antibacterial activity of CONPs increased with the increase of GMA content.