Synthesis, Surface Properties, and Antibacterial Activity of Novel Ester‐Containing Cationic Silicone Surfactants and Their Utilization as Fabric‐Finishing Agents
In this study, a series of cationic silicone surfactants SiQCnCl containingester groups and double long‐chain alkyls (n = 9, 11, 13, 15, and 17) were synthesized by microwave irradiation and characterized using infrared Fourier transform (FTIR), 1H nuclear magnetic resonance (1H NMR), and thermogravimetric analysis (TGA). Surfaceactivity and adsorption of these surfactants were investigated by measuring
在这项研究中,通过微波辐射合成了一系列包含酯基和双长链烷基(n = 9、11、13、15和17)的阳离子硅表面活性剂SiQC n Cl ,并使用红外傅里叶变换(FTIR)进行了表征,1 H核磁共振(1 H NMR)和热重分析(TGA)。通过测量平衡表面张力来研究这些表面活性剂的表面活性和吸附。临界胶束浓度(CMC)随着SiQC的烷基长度减小Ñ在25℃Cl和所以没有在CMC中的对应的表面张力(γ CMC)。还通过透射电子显微镜(TEM)和动态光散射(DLS)系统研究了水溶液中的聚集行为。观察到直径为300至900 nm的球形或椭圆形聚集体。研究还表明,阳离子有机硅表面活性剂对金黄色葡萄球菌表现出一定的抗菌作用,但对大肠杆菌的作用稍差。SiQC 15的形态结构使用扫描电子显微镜(SEM)观察了用Cl处理过的棉织物,结果表明表面变得整洁光滑。而且,成品棉织物保持了一些抗菌性能并改善了柔软度,可以
Preparation of Novel Cationic Surfactants from Epichlorohydrin: their Surface Properties and Biological Activities
作者:A. S. Mohamed、M. Z. Mohamed
DOI:10.1007/s11743-009-1141-7
日期:2010.4
salt in the quaternization step. The surfaceproperties of the prepared compounds and their biologicalactivities were measured. The prepared compounds had good water solubility and showed characteristic surfaceactiveproperties.
Solvent free quaternization of tertiary amines with dimethylsulfate
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0684223A1
公开(公告)日:1995-11-29
A process for a high temperature, solvent free quaternization of certain tertiary amines using dimethylsulfate to produce quaternary ammonium methyl sulfates which may be used in fabric softening and other applications, is disclosed.