查询词典 surfactants

Using a downward penedon test device, an -rotal study on improving the humidifying penetration ability of the water glass grout when mixed with three surfactants of dodecyl aloohol, sodium dodecyl sulfonate,dodecyl bezene sulfonic acid sodium salf has been performed.

1引言水玻璃浆材由于其无毒、价廉、可灌性好等优点，一直是岩土工程灌浆加固中首选的化学材，占目前使用的化学浆液的叨见以上［'］。

In this paper, firstly using natural fatty acids including lauric acid, myristic acid, palmitic acid etc. and disproportionated rosin as starting materials, the acyl reaction of starting materials with SOCl_2 respectively, and then using Schotten-Baumann condensation: on the reaction conditions of alkalescence, condensation of acylchloride with amino acid (sarcosine, glycine, alanine etc.), and then acidification, saltation. A series of anionic surfactants of N-acyl amino: sodium N-fatty acyl sarcosinate (SFS-12, SFS-14, SFS-16); sodiun N-fatty acyl glycinate(SFG-12, SFG-14, SFG-16); sodium N-fatty acyl alaninate(SFA-12, SFA-14, SFA-16)and sodium N-disproportionated rosinoyl aminatewere prepared. During the preparation of N-acylamino acid, the reaction conditions of acylchloride with amino acid condensation were identified by optimizing the synthetic conditions of N-lauroyl sarcosine: mol ratio of amino acid to acylchloride 2:1, reaction taken place in a solvent composed by acetone/water 2:1, acylchloride and 20% NaOH were slowly added to the reaction mixture at the same time while maintaining the pH at 9~10, after completion of adding maintaining reacting for 2.5h at 25℃.

首先以月桂酸、肉豆蔻酸、棕榈酸等天然脂肪酸和歧化松香为原料，与氯化亚砜反应制得酰氯，然后采用Schotten-Baumann 缩合法路线，即在碱性条件下，酰氯和氨基酸(肌氨酸、甘氨酸、丙氨酸等)缩合，经过酸化、成盐，合成一系列氨基酸型阴离子表面活性剂：脂肪酰肌氨酸钠，即月桂酰肌氨酸钠(SFS-12)、肉豆蔻酰肌氨酸钠(SFS-14)、棕榈酰肌氨酸钠(SFS-16)；脂肪酰甘氨酸钠，即月桂酰甘氨酸钠(SFG-12)、肉豆蔻酰甘氨酸钠(SFG-14)、棕榈酰甘氨酸钠(SFG-16)；脂肪酰丙氨酸钠，即月桂酰丙氨酸钠(SFA-12)、肉豆蔻酰丙氨酸钠(SFA-14)、棕榈酰丙氨酸钠(SFA-16)；N-歧化松香酰基氨基酸钠(sodium N-disproportionated rosinoyl aminate)，即N-歧化松香酰基肌氨酸钠(sodium N-disproportionated rosinoyl sarcosinate ，简称SDRS)、N-歧化松香酰基甘氨酸钠(sodium N-disproportionated rosinoyl glycinate，简称SDRG)、N-歧化松香酰基丙氨酸钠(sodium N-disproportionated rosinoyl alaninate，简称SDRA)。

Several main non-ionic surfactants (AEO、TX、SpanTweem、EL) was used to emulsify liquid paraffin and di octyl sebacate and the anti-coalescence stability of the corresponding emulsion was studied, the impact of the presence of benzene and double bond in lyophobic moiety of surfactant and its length and matching with dispersed phase upon the interfacial viscosity and Gibbs elasticity was analyzed.

本文采用了几种主要的非离子活性剂(AEO、TX、Span-Tween、EL)来乳化白油和癸二酸二辛酯，通过对各乳液体系抗聚并稳定性的考察，分析了活性剂亲油链段的长度、苯环和双键的存在、及亲油链段与被乳化对象分子结构的匹配关系对界面粘度和Gibbs弹性的影响。

ZnO nanoparticles were surface-modified by surfactants such as span-60,oleic acid,sodium laurate,andx as surface-modifier,and were added at the concentration of 0.5% in lquid paraffin to perform sedimentate test.

以山梨糖醇酐三油酸酯(span-60)、油酸、月桂酸钠和氟碳(C—Fx为表面活性剂对纳米氧化锌进行表面修饰，将修饰过的纳米氧化锌添加到液体石蜡中，使其质量分数为0.5%，进行沉降实验。

The results indicated that these surfactants were soluble in SC CO〓 and could form surfactant aggregates, which can solubilize significant amounts of water.

相态结果表明，这些表面活性剂能够溶解在SC CO〓中，并且能够形成增溶一定量水的表面活性剂聚集体。

Based on their good skills to solubilize many organic compounds, surfactants and cyclodextrins have been tested as bioavailability-enhancing agents in the research of bioremediation.

表面活性剂和环糊精对有机化合物具有良好的增溶能力，这使它们成为提高污染物生物可利用性的促进试剂，现已被应用于生物修复的研究。

Acetone and SDS have been added to CH2CL2 solution containing PLA. After sonification of 20 minutes, this polymer solution has been dropwisely added to aqueous solution containing 8-14% Pluronic F-68 surfactant and stirring with homogenizer (25000 rpm). With rota-evaporator to remove solvent, polyester nanoparticles possessed average size between 61 and 64 nm. Other combinations of surfactants, such as : SDS and PVA, PAA and SDS, used in preparation of nanoparticles of polyester, resulted in much larger particles compared to above.

丙酮和十二烷基硫酸钠加入溶於二氯甲烷的聚乳酸中，并经超音波振荡20分钟，所产生的高分子微粒溶液再滴入以均质机搅拌(25000 rpm)含有(8-14%) Pluronic F-68界面活性剂溶液中，经减压浓缩除去溶剂后，奈米聚酯微粒平均粒径大小为61-64 nm，其他界面活性剂组合，包括十二烷基硫酸钠与PVA、PAA与SDS，其产生聚酯平均粒径皆大於此。

Sodium allyl hydroxyalkyl sulphonate was used as reactive surfactant to modify the polymerization ofelastic acrylic emulsion. Influence of SAHS on minimum content of surfactants and particle size of emulsion was studied andmechanism of change of particle size discussed.

使用烯丙基羟烷基磺酸钠作为可聚合乳化剂，改性合成了弹性丙烯酸酯乳液，研究了它对乳化剂的最低用量和乳胶粒粒径的影响，探讨了乳胶粒粒径变化的机理。

The properties of microcapsules,including the surface morphology,the size and distribution were characterized using optical photographic microscopy.Surface tension of the surfactants and interfacial tension of oil /water for sodium dodecylbenzene sulphonate solutions at different concentrations were determined by ring method.

采用光学显微镜表征微胶囊粒径大小及分布、表面形貌等性质，用圆环法测定表面活性剂溶液的表面张力和不同十二烷基苯磺酸钠浓度水溶液/环氧树脂的界面张力，探讨了表面活性剂种类和浓度对MUF环氧树脂微胶囊粒径和形成过程的影响。

The p-tert-butyl calix arene (n=4,6,8) were synthesized by p-tert-butyl phenol, formaldehyde aqueous solution as raw materials. Six kinds of calixarene oligomeric surfactants were prepared by etherification of the calix arene with 1,3-propane sultone and 1,4-butane sultone.

以对叔丁基苯酚、甲醛为主要原料合成杯芳烃母体对叔丁基杯芳烃(n=4，6，8)；以1，3-丙烷磺内酯、1，4-丁烷磺内酯为醚化试剂，经Williamson醚化反应，合成出6种杯芳烃基低聚表面活性剂。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。