查询词典 surfactants

The dispersion behavior of ultrafine talc in aqueous system was investigated by the sedimentation test. The dispersion effects of cationic surfactant and some anionic surfactants with different hydrophilic ionogens were studied. By testing the changes of Zeta potential and the dispersion rate of the system with the addition of surfactant, the dispersion mechanism of dispersants was discussed.

采用沉降法考察了阳离子表面活性剂和几种亲水基不同的阴离子表面活性剂在水介质中对微细滑石颗粒的分散效果；通过测试加入表面活性剂前后颗粒表面Zeta电位、体系分散率变化，探讨了分散剂的作用机理。

It was found that surfactants showed some effects on the electron transfer reaction at thiol modified gold electrode.

阴离子表面活性剂对上述修饰电极表面的电子传输反应有一定的抑制作用。

The hard agglomerate formation could be effectively avoided by mixing some macromolecular surfactants with the undried gels.

在凝胶干燥前加入某些高分子表面活性剂可使粉末团聚状态得到显著改善。

Which is made up of long carbon chain by N-alkylation or acylation,The surface activity is greatly enhanced because of structure of borate surfactants and the basic property of long carbon chain.

它们将长碳链通过N烷基化和酰化联接在一起的一类含硼表面活性剂，由于是含四配位硼氧杂环结构的表面活性剂和结合长碳链的基本性质从而极大的提高了表面活性。

Compared with the previous method, the improved route can provide directly a spheroid form of immobilized lipase particles of which the size can be controlled by adding non-ionic surfactants during the preparation process so as to increase the recovery rate of enzyme as well as decrease the external diffusional restriction which can diminish the enzyme activity. The improved method can also alter the hydrophobicity and microstructure of the immobilized enzyme matrix by changing the molar ratios of different alkoxyl silanes so as to enhance the enzyme activity by a"surface active effect"and eliminating the internal diffusional restriction.

与前人的制备方法相比，改进的方法可直接制得球形的固定化酶颗粒，而且颗粒的大小可以通过在制备过程中加入非离子型表面活性剂加以控制，从而可以提高固定化过程的酶活回收率和减小外扩散效应对酶的表观催化活力的影响；改进的方法还可以通过改变原料硅氧烷的种类及配比来改变最终制得的固定化载体的疏水性质及微观结构，从而通过对脂肪酶的&界面活化&作用和减小内扩散效应提高固定化脂肪酶的表观酯化活力。

Measurements of the Chemical Oxygen Demand and the concentration of the anionic surfactants were used to follow the oxidation.

测量的 化学需氧量和浓度的阴离子表面活性剂是用来跟踪氧化。

The new anionic gemini-type surfactants are expected to have improved surface properties, which could lead to additional economical applications.

新的阴离子gemini-type表面活性剂预计将有改进的表面性能，是哪一种可能会导致额外的经济的应用。

Some properties of anionic Gemini surfactants were studied in this paper to obtain a good one to efficiently enhance oil recovery.

本文对合成的Gemini阴离子表面活性剂进行各种基本物化性能和应用性能的研究，希望可以从中筛选出性能较好的用于油田驱油提高原油的采收率。

It was suggested that vesicles were formed by non-ideal mixing of cationic and anionic surfactants.

在实验结果和文献总结的基础上，说明了在正负离子表面活性剂混合体系中囊泡形成的非理想混合机理的合理性。

Therefore, in the treatment of development process from bubbling as developering of anionic surfactants.

所以，在显影增工时起泡物次给为显影液洋的阴离子暗不天活性剂。

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。