一些商业材料,例如单乙醇胺,氯乙酸,三乙醇胺和香草醛已被用于构建三种Gemini阳离子表面活性剂,它们的疏水尾长标记为CMTC,LMTC和PMTC。FTIR和1证实了新双子座的化学结构1 HNMR。合成的双子座的疏水尾部通过表面张力测量研究了在三种研究温度下在溶液中的行为。具有最长尾巴长度的PMTC Gemini阳离子表面活性剂显示出最低的临界胶束浓度。随着溶液温度的升高,它也呈下降趋势。热力学见解是指随着疏水性和温度的升高,合成的表面活性剂趋向于吸附和胶束化的更高趋势。制备的富电子表面活性剂在腐蚀性的1.0 M HCl中显示出良好的抗钢腐蚀性能。这与表面活性剂的结构和温度有关。PMTC表面活性剂在55°C下表现出最高的抑制效率92.09%,由于与较短的表面活性剂尾部CMTC相比,较长的疏水性尾部表现出更高的吸附亲和力。极化测量表明三种表面活性剂表现为混合型抑制剂。合成的三种富含电子的双子
Synthesis, surface properties, and biological activity of some cationic surfactant complexes
作者:Ahmed I. Adawy、Mohammed A. Abbas、Khaled Zakaria
DOI:10.1080/15421406.2021.1905144
日期:2021.7.24
Abstract Various surfactants were designed in this analysis by esterification of triethanol amine with dodecanoic acid then quaternized through benzyl bromide then complexed with hydrated cobalt chloride to produce metallocationic surfactants. Characterization of the designed surfactants by FTIR, microelemental analysis, and atomic absorption spectroscopy was done. Surface tension at four different
摘要 在该分析中,通过三乙醇胺与十二烷酸的酯化,然后通过苄基溴季铵化,然后与水合氯化钴络合以产生金属定位表面活性剂,设计了各种表面活性剂。通过 FTIR、微量元素分析和原子吸收光谱对设计的表面活性剂进行表征。检查了四种不同温度下的表面张力,并考虑了表面标准,这表明设计的复合物具有高表面作用。研究了胶束化的自由能 (ΔG o mic ) 和吸附 (ΔG o ads )。对不同微生物的杀菌作用进行了检查,结果表明设计的复合物具有较高的生物作用。
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.
[EN] COMPOSITION AND METHOD TO IMPROVE THE FUEL ECONOMY OF HYDROCARBON FUELED INTERNAL COMBUSTION ENGINES<br/>[FR] COMPOSITION ET PROCÉDÉ POUR AMÉLIORER L'ÉCONOMIE EN COMBUSTIBLE DE MOTEURS À COMBUSTION INTERNE À ALIMENTATION PAR DES COMBUSTIBLES HYDROCARBONÉS
申请人:BASF SE
公开号:WO2010005720A1
公开(公告)日:2010-01-14
A composition and method of improving the fuel economy of hydrocarbon fuel-powdered internal combustion engines.The composition contains a propoxylated and/or butoxylated reaction product of (a) at least one fatty acid, fatty acid ester, or mixture thereof and (b) a dialkanolamime. I he composition is added to a hydrocarbon fuel in an amount of about 5 to about 2,000 ppm, based on the weight of the hydrocarbon fuel, to reduce friction within the engine and achieve an enhanced fuel economy.