Exercises

1．Fill in the blanks with appropriate words and expressions.

An emulsion is a mixture of ________ and________.Emulsification is probably the most versatile of surface active agents for practical applications. Emulsion has two types: ________and________. Many factors can determine stability of the emulsion:________，________，________，________，________，________.

2．Give some words which could describe the character of the emulsion.

3．Put the following sentence into Chinese.

Since highly purified surfactants generally produce interfacial films that are not close packed and hence not mechanically strong，good emulsifying agents are usually a mixture of two or more surfactants rather than an individual surfactant.

4．Put the following terms into English.

悬浮液 水包油 油包水 连续相 分散相 黏度 乳化 乳液

双电层 球形的

References

ROSEN M J. Surfactants and Interfacial Phenomena [M]. 3rd ed. New York: John Wiley & Sons. Inc.，2004.