Application of Amino Acid-Based Surfactant in Dishwasher Detergent

The application of amino acid-based surfactant in dishwasher detergent was studied in this paper. The foam and oil-removing performance of amino acid surfactants in alkaline condition were test to discuss feasibility of amino acid-based surfactant from natural origin as the alternative to traditional nonionic surfactants from petroleum origin in dishwasher detergent. Comparative study was conducted through using various amino acid-based surfactants and nonionic surfactants respectively, together with enzymes and peroxide to formulate dishwasher detergents, and their application properties such as foam performance and detergency were also evaluated when washing different tableware in automatic dishwasher. The results showed that among all tested amino acid surfactants, glutamate surfactants showed low foaming and high oil-removing ability in alkaline condition, and excellent decontamination ability in dishwashing tests.

Experimental investigation into L-Arg and L-Cys eco-friendly surfactants in enhanced oil recovery by considering IFT reduction and wettability alteration

Surfactant flooding is an important technique used to improve oil recovery from mature oil reservoirs due to minimizing the interfacial tension(IFT)between oil and water and/or altering the rock wettability toward water-wet using various surfactant agents including cationic,anionic,non-ionic,and amphoteric varieties.In this study,two amino-acid based surfactants,named lauroyl arginine(L-Arg)and lauroyl cysteine(L-Cys),were synthesized and used to reduce the IFT of oil–water systems and alter the wettability of carbonate rocks,thus improving oil recovery from oil-wet carbonate reservoirs.The synthesized surfactants were characterized using Fourier transform infrared spectroscopy and nuclear magnetic resonance analyses,and the critical micelle concentration(CMC)of surfactant solutions was determined using conductivity,pH,and turbidity techniques.Experimental results showed that the CMCs of L-Arg and L-Cys solutions were 2000 and 4500 ppm,respectively.It was found that using L-Arg and L-Cys solutions at their CMCs,the IFT and contact angle were reduced from 34.5 to 18.0 and15.4 mN/m,and from 144°to 78°and 75°,respectively.Thus,the L-Arg and L-Cys solutions enabled approximately 11.9%and 8.9%additional recovery of OOIP(original oil in place).It was identified that both amino-acid surfactants can be used to improve oil recovery due to their desirable effects on the EOR mechanisms at their CMC ranges.

Chiral Recognition of Binaphthyl Derivatives with L-Undecyl Leucine Surfactants in the Presence of Sodium and Lysine Counterions

This study investigates the effect of counterions on the chiral recognition of 1,1'-Binaphthyl-2,2'-diamine (BNA) and 1,1'-Binaphthyl-2,2'-diyl hydrogenphosphate (BNP) enantiomers when using an amino acid-based surfactant undecanoyl L-leucine (und-Leu) as the chiral pseudostationary phase in capillary electrophoresis. The effects of using two different counterions (sodium and lysine) on the chiral recognition of binaphthyl derivatives were compared at varying pH conditions. The enantiomeric separation of BNA and BNP enantiomers via capillary electrophoresis, using und-Leu as the chiral recognition medium, significantly improved the enantiomeric resolution in capillary electrophoresis at pH 7 when using Lysine counterions as compared to using sodium as the counterion. More specifically, at a surfactant concentration of 45 mM, at pH 7, a significant increase in chiral selectivity was observed when lysine was used as the counterion compared to sodium. The enantiomeric resolution of BNA and BNP increased by 6-fold and 1.1-fold, respectively, in capillary electrophoresis experiments when lysine was utilized as the counterion compared to using sodium. Furthermore, the retention factor of BNA and BNP enantiomers also increased approximately 3.5-fold and 4-fold, respectively, in the presence of lysine counterions as compared to using sodium counterions. When running buffer in capillary electrophoresis was increased to pH 11, the resolution and retention factors were nearly identical when comparing the effects of the sodium and lysine counterions. This signifies the important role of lysine’s positive net charge on chiral recognition. This study provides insight into the potential advantages of using cationic, pH-dependent counterions such as lysine to significantly improve the chiral recognition of binaphthyl derivatives when using chiral anionic surfactants as the pseudostationary phase in capillary electrophoresis.

高效液相色谱-紫外检测法同时测定洗面奶中4种N-月桂酰氨基酸表面活性剂

N-月桂酰氨基酸(NLAAs)表面活性剂与传统表面活性剂相比在安全性上具有明显的优势,应用领域日益增多。但由于NLAAs的紫外吸收较弱,采用高效液相色谱-紫外检测进行含量测定存在一定困难,一般使用示差折光指数检测器、蒸发光散射检测器等通用型检测器来进行检测。为解决这一难题,本研究通过优化流动相的组成,选择合适的色谱柱和检测波长,建立了高效液相色谱-紫外检测同时测定月桂酰谷氨酸(LG)、月桂酰甘氨酸(LC)、月桂酰丙氨酸(LA)、月桂酰肌氨酸(LS)4种NLAAs表面活性剂的方法。样品在乙腈-0.10%H_(3)PO_(4)水溶液(60∶40,v/v)中超声提取10 min,滤膜过滤后用高效液相色谱仪测定,以乙腈-0.10%H_(3)PO_(4)水溶液为流动相进行梯度洗脱,经Agilent Eclipse Plus C_(18)色谱柱(150 mm×4.6 mm,5μm)分离,在205 nm波长处进行检测。结果显示:4种NLAAs在2.0~800.0 mg/L范围内呈良好的线性关系,相关系数(r)均≥0.9995,检出限(LOD)为0.17~0.49 mg/L,定量限(LOQ)为0.57~1.63 mg/L。在0.60、4.50、15.00、24.00 mg/g 4个加标水平下,NLAAs的加标回收率在94.3%~107.4%范围内。采用该方法对5个洗面奶样品中的NLAAs进行含量测定,发现所有样品都含有一种或多种NLAAs化合物,NLAAs的总含量在64.58~97.01 mg/g范围内。该方法前处理简单,测试快速,方法精密度、准确性、稳定性良好,适于洗面奶中NLAAs的含量测定,也可为该类型表面活性剂原料纯度、合成产率检测及产品的质量控制提供有效的技术参考。

氨基酸表面活性剂结构和性能关系

文章对氨基酸表面活性剂结构和性能关系进行了研究,为产品应用提供参考。AG02-95通过控制其中和度,或通过高低碳链复配可调控溶解性和结晶性能;YC02H-30、YG02-30、YB02-30、YN02-30在近中性条件下均表现出优异的泡沫丰富度和稳定性;YGTEA-30在pH值5.5时具有更优异的泡沫表现,更适合透明配方;YC02H-30适合pH值>6.8的配方,YC03H-30更加适合pH值5.5~6.8的配方;YC03-30和YN02-30较AS02-30和YG02-30具有更加优异的增稠表现。

氨基酸表面活性剂分析方法探讨

氨基酸表面活性剂作为一种绿色的生物质表面活性剂,因其环保、温和等特点在个人护理和清洁产品中的应用日益广泛。因此,对氨基酸表面活性剂的质量控制显得尤为重要。介绍了氨基酸表面活性剂的主组分、脂肪酸、氯化物、固含量及色泽等质量控制指标的分析方法,对各种方法进行了梳理、比对及分析,指出了各种方法的优缺点,可为氨基酸表面活性剂的生产者及使用者提供参考。

氨基酸表面活性剂及多元醇对月桂醇聚醚-6羧酸钠泡沫性能的影响

以月桂醇聚醚-6羧酸钠为研究对象,考察了复配不同种类的氨基酸表面活性剂及不同多元醇对其泡沫性能的影响。结果表明:月桂酰肌氨酸钠、椰油酰氨基丙酸钠与月桂醇聚醚-6羧酸钠复配具有较好的发泡力,而椰油酰谷氨酸二钠更有利于提升月桂醇聚醚-6羧酸钠的泡沫稳定性。在配方稳定性上,复配10%的月桂酰肌氨酸钠即可改善月桂醇聚醚-6羧酸钠的低温稳定性,使得样品在低温下仍为透明澄清液体。此外,不同多元醇的添加不会影响月桂醇聚醚-6羧酸钠的发泡力,而在泡沫稳定性上,添加甘油、麦芽糖醇则优于甲基丙二醇、聚乙二醇-8、丙二醇。

月桂酰甲基羟乙基磺酸钠在清洁产品中的性能研究

研究了化妆品新原料月桂酰甲基羟乙基磺酸钠的增稠、透明度和去污力,并与常见的温和表面活性剂进行性能对比。将8%主表面活性剂与4%椰油酰胺丙基甜菜碱复配,通过氯化钠对黏度的影响考察各个表面活性剂增稠的难易程度。实验结果表明,0.5%的盐即可增稠月桂酰甲基羟乙基磺酸钠至5000 mPa·s,而常见的氨基酸类阴离子表面活性剂需要较多盐才能增稠或者难以用盐增稠。考察了室温和4℃下,6%表面活性剂水溶液在pH值5~8范围内的透明度。实验结果表明,月桂酰甲基羟乙基磺酸钠具有良好的透明度,而常见的氨基酸类阴离子表面活性剂中,除月桂酰肌氨酸钠以外均会因温度或pH值变化出现不同程度的不透明或者析出现象。通过使用0.05%表面活性剂水溶液清洁皮脂污布,测量清洗前后污布白度差值衡量其对于皮脂的去污力。实验发现月桂酰甲基羟乙基磺酸钠去污力强于大部分氨基酸类阴离子表面活性剂,接近月桂醇聚醚硫酸酯钠(SLES)和甲基椰油酰基牛磺酸钠。

Liquid Membrane Oscillation of Water/Oil/Water System Containing TTAB and Recognition to Amino Acids

The liquid membrane oscillation of a novel water（aqueous tetradecyl trimethyl ammoniumbromide,TTAB and alcohol solution）/oil（picric acid in chloroform solution）/water（aqueous glucose solution） system was investigated by means of a homemade device.The results show that the water（aqueous 7 mmol/L TTAB and 0.5 mol/L n-propanol solution）/oil（0.5 mmol/L icric acid in chloroform solution）/water（0.1 mol/L glucose solution） system performed sustained and stable oscillation at 30℃.The oscillation curve under optimized conditions is considered to be referent.Several oscillation curves were accumulated with the addition of different amino acids.The results showed that the novel system can recognize the added amino acids such as L-tryptophan,L-tyrosine,and D,L-tyrosine.And there is corresponding relationship between the change of curve shape and the quantity of amino acid added.

N-酰基氨基酸型表面活性剂的合成研究进展

N-酰基氨基酸型表面活性剂是一种安全、环保的生物基表面活性剂,因具有表面性能优良、生物降解性好、刺激性低等优点受到广泛关注。综述了N-酰基氨基酸型表面活性剂的合成研究进展,包括化学法、酶法、化学-酶法和生物发酵法,分析了各种合成方法的优缺点。

稻米油酰基丝氨酸钠的合成及性能

以自制稻米油甲酯、丝氨酸为主要原料,通过酰胺化反应合成氨基酸型表面活性剂稻米油酰基丝氨酸钠。通过傅立叶红外光谱、核磁共振氢谱对产品进行结构表征,对合成产品的表面张力、增溶、乳化、泡沫、去污、润湿、抗硬水等性能进行研究。结果表明,稻米油酰基丝氨酸钠的收率可达91.73%,采用溴甲酚绿两相滴定法测得总活性物质量分数为78.5%。稻米油酰基丝氨酸钠具有较好的表面活性和增溶性,同时具有优良的乳化性、泡沫性、去污性、润湿性等性能。

非酰氯法合成氨基酸表面活性剂研究进展

氨基酸表面活性剂是一类相容性好的温和表面活性剂,广泛应用于日用清洗、化妆品等行业。本文对氨基酸表面活性剂的合成方法进行了介绍,重点介绍以非酰氯为原料合成氨基酸表面活性剂的研究进展。

羧基化聚醚有机硅表面活性剂CPES的合成、表征及性能

在无溶剂条件下,制备了一种羧基化聚醚有机硅表面活性剂CPES。用IR和1HNMR对CPES结构进行了表征,并对其临界胶束浓度(CMC)、表面张力(γ)、与非离子表面活性剂配伍后的浊点改变及对氨基硅油的乳化性能进行了测定。结果表明,CPES有良好的表面活性,其CMC为4μmol/L,γCMC为32.58 mN/m;与非离子表面活性剂TX-10和AEO-8配伍后,当w(CPES)分别达到37.5%、50%时,体系浊点消失;将其与阳离子氨基硅乳(氨值为0.3、0.6 mmol/g)复配后,乳液在3000 r/min离心15 min的条件下稳定,浊点可提高到100℃以上。

N-脂酰氨基酸型表面活性剂的研究进展

简要介绍了N-脂酰氨基酸型表面活性剂的结构与分类;重点综述了近十余年此类表面活性剂化学合成方法的研究进展,讨论了其性能及应用研究领域,同时根据其表面性能指出了今后的研究与开发方向。

新型氟碳表面活性剂的合成及在灭火剂中的应用

以全氟辛基磺酰氟、乙二胺和丙烯酸甲酯为主要原料,合成了N′-(N-全氟辛磺酰胺基)乙基亚氨基-β,β-二丙酸二钠氨基酸型氟碳表面活性剂。该表面活性剂具有良好的表面活性,其临界表面张力为16.5 mN/m(20℃),临界胶束浓度为1.0×10-4mol/L;与两性和非离子碳氢表面活性剂的配伍性良好。在水成膜泡沫灭火剂中,能显著提高泡沫灭火剂的灭火性能和抗烧性能,灭火时间由45.8 s降到24.6 s,抗烧时间由4.7 min提高到7.8 min。

N-酰基氨基酸系列表面活性剂的合成和应用

本文综合评述和介绍了N 酰基氨基酸系列表面活性剂的合成及应用 (特别在农业、生物化学和药物制造领域的应用 )的一些近年来的研究新进展 ,指出了进一步的研究方向 ,并报道了我公司开发此类产品的情况。

蒜蓉豆豉酱白点结晶问题的研究

对瓶装蒜蓉豆豉酱在货架期出现的白点结晶进行分析，结果表明，白点结晶是由17种游离氨基酸组成，其中酪氨酸的含量比例最高，占70％。选用三种表面活性剂（SP，SFE和SE），于酱料煮制时分别加入，能抑制酪氨酸的积聚而不结晶析出。

两性表面活性剂的合成路线概述

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。

由菜籽粕合成N-硬脂酰基复合氨基酸表面活性剂

以菜籽粕为原料，用盐酸水解制得复合氨基酸液（ＡＡ），再与硬脂酰氯反应合成Ｎ－硬脂酰基复合氨基酸表面活性剂。研究了水解条件对氨基酸得率的影响和水解过程中氨基酸液中异硫氰酸酯（ＩＴＣ）及口恶唑烷硫酮（ＯＺＴ）含量的变化情况，探讨了物料配比、溶液的ｐＨ值、反应温度以及溶剂对合成反应的影响。实验结果表明，菜籽粕最佳水解条件：水解温度１０５～１１０℃，盐酸的浓度６．０ｍｏｌ／Ｌ，水解时间１８ｈ，氨基酸的得率为８９．６％。合成Ｎ－硬脂酰基复合氨基酸的最佳条件为硬脂酰氯：复合氨基酸液：丙酮＝１：２：２（体积比），ｐＨ９～１０，反应温度２０～３０℃。产品具有良好的表面活性。

氨基酸型氟碳表面活性剂的合成及应用

以全氟辛基磺酰氟、乙二胺和丙烯酸甲酯为主要原料,合成了N-(2-全氟辛基磺酰胺基乙基)-β,β′-亚氨基二丙酸二钠氨基酸型氟碳表面活性剂,通过酸碱滴定、核磁共振和红外光谱对其分子结构进行了表征。测试结果表明,所合成表面活性剂的临界表面张力为16.5 mN/m(20℃),临界胶束浓度为1.0×10-4mol/L,具有良好的表面活性。在水成膜泡沫灭火剂中应用,能显著提高泡沫灭火剂的灭火性能和抗烧性能,灭火时间由45.8 s降到24.6 s,抗烧时间由4.7 min提高到7.8 min。500 L放大实验产品经检测,灭火性能达到GB 17427—1998的ⅠA级。