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分类(阴离子型表面活性剂)

分类(阴离子型表面活性剂). 阴离子型表面活性剂. 起表面活性作用的是 阴离子部分 。 1.肥皂类 通式为(RCOO-) n M n+ (高级脂肪酸盐,脂肪酸有硬脂酸、油脂酸等) 一价皂(如钾皂、钠皂) 二价皂(钙皂、铅皂等) 有机胺皂等。. 因M不同,分为. 注:一价皂和有机皂为亲水性,二价皂或多价皂亲油性。. 本类表面活性剂具有良好的乳化能力 亲水性强 较耐酸和钙、镁盐,比肥皂类稳定. 优点.

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分类(阴离子型表面活性剂)

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  1. 分类(阴离子型表面活性剂)

  2. 阴离子型表面活性剂 • 起表面活性作用的是阴离子部分。 • 1.肥皂类 通式为(RCOO-)n Mn+ (高级脂肪酸盐,脂肪酸有硬脂酸、油脂酸等) 一价皂(如钾皂、钠皂) 二价皂(钙皂、铅皂等) 有机胺皂等。 • 因M不同,分为 注:一价皂和有机皂为亲水性,二价皂或多价皂亲油性。

  3. 本类表面活性剂具有良好的乳化能力 亲水性强 较耐酸和钙、镁盐,比肥皂类稳定 • 优点 阳离子型高分子药物产生作用而沉淀 因有刺激性,故一般只供外用软膏的乳化剂 • 缺点

  4. 阴离子型表面活性剂 • 肥皂类(外用) • 硫酸化物SLS(润湿剂或增溶剂) • 磺酸化物(洗涤剂) 一价皂(甲皂、钠皂) 二价皂(钙皂) 有机胺皂(三乙醇胺皂) 十二烷基硫酸钠 十六烷基硫酸钠 十八烷基硫酸钠 、、

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