微乳的特点是当少量的表面活性剂与辅助表面活性剂的混合物加到油-水二相系统中时,形成一个透明的、均匀的具热力学稳定的混合体系。动力学稳定的微乳,其乳粒直径在5000(?)以下,可用于难溶于水的药物的载体,以及使油溶性药物分散在水中而便于服用。一、微乳的性质和结构微乳是在1943年由英国化学家Schulman首先提出的。他认为微乳的形成机制涉及界面张力。微乳的组成范围狭小,制备方 Microemulsions are characterized by the addition of a small amount of a mixture of surfactant and cosurfactant to the oil-water two-phase system to form a transparent, homogeneous and thermodynamically stable mixing system. Kinetics of stable microemulsion, the grain diameter of 5000 (?) Or less, can be used for poorly water-soluble drug carrier, and oil-soluble drugs dispersed in water and easy to take. First, the nature and structure of microemulsion Microemulsion was first proposed by the British chemist Schulman in 1943. He believes that the formation mechanism of microemulsion involves interfacial tension. Microemulsion composition of a narrow range, preparation side