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单词 Surface active agent
释义

Surface active agent

英语例句库

Alkyl indicant is a new non-ionic surface active agent.

烷基糖苷是一类新型的非离子表面活性剂。

The result indicates that the main metabolic product of petroleum hydrocarbon degradation is acetic acid and surface active agent of glycolipid composed of fatty acid and rhamnose.

实验表明,微生物降解原油代谢产物主要是乙酸和以棕榈酸为主的脂肪酸与鼠李糖形成的糖酯类表面活性剂。

中文百科

表面活性剂 Surfactant

(重定向自Surface active agent)
胶束——表面活性剂分子的亲脂尾端聚于胶束内部,避免与极性的水分子接触;分子的极性亲水头端则露于外部,与极性的水分子发生作用,并对胶束内部的憎水基团产生保护作用。形成胶束的化合物一般为两亲分子,因此一般胶束除可溶于水等极性溶剂以外,还能以反胶束的形式溶于非极性溶剂中。
Capa superficial de un tensoactivo sobre una superficie de agua.
Micela.

表面活性剂(又称界面活性剂、乳化剂)是能使目标溶液表面张力显着下降的物质,可降低两种液体或液体-固体间的表面张力。表面活性剂一般为具有亲水与疏水基团的有机两性分子,可溶于有机溶液和水溶液。表面活性剂在溶液中的浓度超过某一临界值后,会自发缔合形成胶束(micelle)。胶束开始明显形成时的浓度称为临界胶束浓度(CMC),是表面活性剂的重要参数。

英语百科

Surfactant 表面活性剂

(重定向自Surface active agent)
Schematic diagram of a micelle of oil in aqueous suspension, such as might occur in an emulsion of oil in water. In this example the surfactant molecules' oil-soluble tails project into the oil, while the water-soluble ends remain in contact with the water phase
Schematic diagram of a micelle – the lipophilic tails of the surfactant ions remain inside the oil because they interact more strongly with oil than with water. The polar
Surfactant classification according to the composition of their head: nonionic, anionic, cationic, amphoteric.

Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids or between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants.

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更新时间:2025/6/18 2:53:02