共查询到17条相似文献,搜索用时 140 毫秒
1.
刘军海 《中国洗涤用品工业》2008,(3):45-46
用丙烯酸酯法合成了N-十二烷基-β-氨基丙酸型两性表面活性剂,并介绍了合成该类表面活性剂的一些其他方法,同时将该表面活性剂应用于洗涤剂配方中测试了其应用性能。 相似文献
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两性表面活性剂(八)——两性表面活性剂的合成 总被引:5,自引:0,他引:5
较为详细地介绍了烷基甜菜碱、烷基酰胺基甜菜碱、磺基甜菜碱及其他若干种甜菜碱型表面活性剂的合成,并比较了其中一些合成路线,特别是磺基甜菜碱的几种合成方法。对咪唑啉中间体、两性咪唑啉合成中的主要副产物及两性咪唑啉的开环结构进行了报道。对氨基酸型两性表面活性剂的原料胺、长链烷基氨基酸及烷基低聚氨基酸的合成方法也进行了讨论。 相似文献
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两性表面活性剂的合成路线概述 总被引:7,自引:3,他引:4
重点介绍了国内新型两性表面活性剂的合成研究概况。咪唑啉型表面活性剂的合成主要是利用了咪唑啉中间体羟基的反应活性,通过酯化或磺化合成出了硼酸酯、硫酸酯和磺酸盐型咪唑啉两性表面活性剂;以二乙醇胺为原料合成两性表面活性剂时,先与脂肪酸或卤代烷反应合成出叔胺,叔胺再与各种季铵化剂反应制备各种两性表面活性剂;甜菜碱型两性表面活性剂的原料可以是脂肪酸、脂肪醇或脂肪伯胺。氨基酸型两性表面活性剂以伯胺为原料,合成出分子中引入了其他原子或基团。对这些两性表面活性剂的性能测定表明,它们的性能优良。 相似文献
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以12-羟基硬脂酸和3种不同类型的天然氨基酸为原料,采用N,N′-二环己基碳酰亚胺(DCC)和N-羟基丁二酰亚胺(NHS)作为偶合剂,合成了3种具有代表性的N-12-羟基硬脂酰氨基酸(酸性、中性和碱性)表面活性剂。首先,12-羟基硬脂酸和N-羟基丁二酰亚胺反应制得N-羟基琥珀酰亚胺12-羟基硬脂酸酯(产率85%以上),然后将后者与氨基酸进行缩合反应得到了N-12-羟基硬脂酰氨基酸表面活性剂。其较佳合成工艺条件为:N-羟基琥珀酰亚胺12-羟基硬脂酸酯与氨基酸摩尔比为1∶1,室温反应,反应时间不少于4 h,以丙酮与水体积比1∶1为混合溶剂,产率达到80%。利用IR、元素分析和1HNMR对所得产物进行表征,确定了产物结构。 相似文献
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介绍了两性表面活性剂的分类、性能以及咪唑啉型、二乙醇胺型、甜菜碱型、氨基酸型的最新合成方法和性能特点,简述了两性表面活性剂在洗涤用品中的应用. 相似文献
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两性表面活性剂的合成及其洗涤作用 总被引:1,自引:0,他引:1
赖小娟 《中国洗涤用品工业》2008,(3):47-50
综述了氨基酸型、甜菜碱型及咪唑啉型两性表面活性剂的主要合成路线,介绍了两性表面活性剂在个人洗护用品、民用洗涤剂、工业洗涤剂及其他工业中的应用。 相似文献
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氨基酸型表面活性剂研究动态 总被引:11,自引:0,他引:11
氨基酸型表面活性剂是以生物物质为基础的环境友好表面活性剂。本文综述了氨基酸型表面活性剂的研究动态 ,并按亲水基 氨基酸的不同以及结构的不同分别介绍了氨基酸型表面活性剂的分类 ;同时重点介绍了氨基酸型表面活性剂的合成制备方法 ,其中包括化学合成法、酶合成法以及化学 酶合成法。最后通过氨基酸型表面活性剂诸多优良的表面性能展望了其发展方向 相似文献
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In this paper, the second part of a systematic study whose aim deals with the influence of the terminal amino acid side chain
on the properties of Nα-lauroyl arginyl dipeptides is reported. Nα-lauroyl arginyl dipeptides that contain an acidic amino
acid (glutamic acid) or a basic amino acid (lysine) as terminal amino acid have been prepared by peptide synthesis methods.
These compounds have been synthesized as methyl esters (cationic surfactants) and free α-carboxylic acids (amphoteric surfactants),
and their fundamental surfactant properties and antimicrobial activity have been evaluated. The properties of these compounds
have been compared to the properties of the cationic monomer derivative methyl ester of Nα-lauroyl arginine and of the amphoteric
monomer derivative Nα-lauroyl arginine reported earlier.
The compounds are soluble in water and show surface activity, although in the case of the amphoteric Nα-lauroyl arginyl dipeptide
containing glutamic acid these two properties depend on the solution pH. The cationic Nα-lauroyl arginyl dipeptides are antimicrobial
agents. However, only the amphoteric compound containing lysine may be considered antimicrobial. 相似文献
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通过静态吸附实验,研究了6种氨基磺酸型两性表面活性剂在石英砂上的吸附,讨论了溶液浓度、表面活性剂疏水基链长、温度和pH对吸附量的影响.结果表明:氨基磺酸盐在石英砂上的吸附具有Langmuir吸附等温式的特点;温度升高使吸附量降低;等温下,溶液浓度低于临界胶束浓度(cmc)时,表面活性剂疏水基链长对吸附量的影响符合Traube规则,溶液浓度高于cmc,疏水基链长增加,吸附平台下降,且疏水基碳数和饱和吸附量Tmax间呈线性关系;溶液pH的变化会导致氨基磺酸型两性表面活性剂和石英砂表面电荷不同,静电作用使吸附量随体系的pH不同而发生变化. 相似文献
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Application of enzymes to the synthesis of amino acid-based bola and gemini surfactants 总被引:1,自引:0,他引:1
Rao Valivety Iqbal S. Gill Evgeny N. Vulfson 《Journal of surfactants and detergents》1998,1(2):177-185
A facile and flexible chemoenzymatic route for the preparation of a variety of amino acid-based surfactants ranging from simple
monoesters to more complex bola- and gemini-amphiphiles is described. The methodology is based on the observation that some
lipases, notably immobilized Candida antarctica and Rhizomucor miehei, readily accept N-Cbzamino acids as substrates and catalyze their esterification/amidation with long-chain alcohols and α,ω-diols/α,ω-diamines
in excellent yield. The resulting alkanediyl-α,ω-bis-(N-Cbz-amino acid) can be either deprotected using conventional procedures to attain a number of multifunctional bola-amphiphiles
or further modified to obtain a range of amino acid-based gemini surfactants. 相似文献
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S. M. Gawish A. A. B. Hazzaa Sh. Zourab B. El-Din Gebril 《Journal of the American Oil Chemists' Society》1981,58(6):757-760
Carboxylic amphoteric surfactants containing ether tertiary amino and carboxylic groups were prepared. Specifically, 2-(2-dimethyl-aminoethoxy)octadecanoic,
hexadecanoic and dodecanoic acid hydrochloride were synthesized. Surface and interfacial tension, emulsifying action, corrosion
inhibition effect and after-treatment of direct dyed cotton fabrics were determined for these surfactants. Antibacterial activities
were also examined.
Chem. Eng. Dept., Faculty of Engineering. 相似文献