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活性剂

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The adsorption of polyoxyethylene alkyl ether surfactants (Brij 30 and Brij 35) on synthetic smectite clay nanoparticles and the interactions between them have been investigated through surface tension, zeta potential and rheology properties measurements, showing that Brij 30 and Brij 35 are adsorbed onto Laponite surface, and the adsorption is increased with decreasing oxyethyl groups.

通过表面张力、Zeta电位和流变学参数的测定,研究了聚氧乙烯烷基醚类非离子型表面活性剂(Brij 30和Brij 35)在合成锂皂石纳米颗粒表面的吸附及对Laponite水分散体系中颗粒间相互作用和体系粘度的影响。结果表明,这类表面活性剂能显著地吸附在Laponite颗粒表面上,且吸附量随其分子中POE链长短而不同。

The optimal conditions for reaction were as follow:the initiator was ammonium persulphate with sodium pyrophosphate syste...

实验确定的最佳反应条件是:引发剂用过硫酸铵-焦磷酸钠氧化还原引发体系,其用量为单体总量的0.4%~0.5%;复合乳化剂选用非离子表面活性剂(TX-10)和混合阴离子表面活性剂复配的复合乳化剂,其最佳用量为单体总量的4.0%~5.0%;反应温度为85~90℃;单体预乳化液滴加时间为3 h左右。

Amphoteric phosphated surfactant is a kind of new surfactantwith multi-functionalfeatures.

磷酸酯两性表面活性剂是一种新型的两性表面活性剂,它具有多功能的特点。

Isolation,Screening and Identification of an Antagonistic Bacterial Against Fusarium oxysporum f.sp.niveum from Pistia stratiotes L .;2. and Pistia stratiotes L .

利用透射电镜研究了阴离子型表面活性剂LAS和非离子型表面活性剂AE对水生植物水绵、水浮莲的损伤作用。

The dispersion effect of sodium dodecyl benzyl sulfate was better than that of sodium dodecyl sulfate and polyvinyl pyrrolidone.

离子型表面活性剂十二烷基苯磺酸钠优于十二烷基硫酸钠和非离子型表面活性剂聚乙烯吡咯烷酮。

Then, nanoparticles were prepared with a reprecipitation method and tested. We found that the nanoparticles with small size and lower poly-dispersion index can be prepared though shortening deposited time, decreasing concentration, increasing deposited temperature and adding surfactant.

利用二次沉淀法制备出三种有机分子不同粒径的纳米微粒,通过改变时间、浓度、温度、表面活性剂等实验条件分析这些因素对纳米微粒粒度的影响,发现缩短放置时间、减少有机稀溶液的注入量、升高放置温度、加入表面活性剂可以得到小粒度,低分散度的纳米微粒。

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。

The preparation of avermyctin emulsions in water was achieved by mixing the surfactants polyoxyethylene (10) octylphenyl ether (OP10), polyoxyethylene styrenated phenol ether (602), and polyoxyethylene (40) castor oil ether (EL-40) with polyoxyethylene (20) castor oil ether (EL-20), separatively. Emulsion stability was investigated by analyzing the hydrophile-lipophile balance, critical micelle concentration, and surface tension. Then, the surfactants of polyoxyethylene polyoxypropylene styrenated phenol ether (1601), block copolymer (L64), and octyl phenyl polyoxyethylene phosphonate were added to the emulsion made by blending EL-40 and EL-20, separatively. The stability of the emulsions was investigated further and discussed in terms of droplet size, surface tension, and zeta potential.

首先将辛基酚聚氧乙烯醚(OP10)、苯乙烯基酚聚氧乙烯醚(602)和蓖麻油聚氧乙烯(40)醚(EL-40)分别与蓖麻油聚氧乙烯(20)醚(EL-20)复配制备阿维菌素水乳剂,从亲水亲油平衡值、临界胶束浓度、表面张力等方面分析了二元表面活性剂复配对乳液稳定性的影响;其次,在EL-40与EL-20复配基础上,将苯乙烯基酚聚氧乙烯聚氧丙烯醚(1601),嵌段共聚物(L64)和辛基酚聚氧乙烯醚磷酸酯分别添加到乳液中,从粒径、表面张力和zeta电势等方面考察三元表面活性剂复配对乳液稳定性的影响。

The proper hydrophobicity of SEPs was proposed to be an essential factor for the formation of honeycomb films, and large-sized SEPs are favorable for the fabrication of highly ordered honeycomb structures.

主要包括以下三部分内容:(1)我们利用表面活性剂替代多金属氧簇表面的抗衡离子得到表面活性剂包覆的多金属氧簇复合物,进而利用水滴模板法制备了基于多金属氧簇的多孔膜,并证实这种方法对于常见的多金属氧簇都是适用的。

The encapsulated TiO〓 particles by polymer were obtained with soapless emulsion polymerization of methyl methacrylate in water in the presence of the pretreated TiO〓 particles.

一种是用偶联剂钛酸丁酯对亲水性TiO〓粒子进行预处理,钛酸丁酯与TiO〓表面羟基反应,交联到TiO〓粒子表面,使TiO〓粒子表面由亲水性转变为憎水性,改善无机粉体与有机单体的亲合性,再进行TiO〓存在下甲基丙烯酸甲酯的无皂乳液聚合,即可得到TiO〓-PMMA复合粒子:另一种方法是用表面活性剂对TiO〓进行预处理,再进行TiO〓粒子存在下甲基丙烯酸甲酯的无皂乳液聚合,TiO〓粒子表面可形成一层均匀的聚合物膜,提出了包覆机理,指出单体在无机粉体表面发生聚合的关键是预先在粒子表面形成聚合场所,即吸附一层表面活性剂

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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。

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