Membranes have become increasingly significant in chemical technology,and they are being used in a wide range of applications.The capacity of a membrane to control the permeability of a chemical species in contact with it is a key attribute that is used in every application.In most packaging applications,the goal is to entirely prevent penetration.The purpose of controlled drug delivery is to slow the rate at which a drug passes from a reservoir to the body.The purpose of separation applications is to allow one component of a mixture to readily permeate the membrane while preventing other components from doing so.Membrane science has evolved from a laboratory curiosity to a widely used technology in industry and medical since the 1960s.This trend is anticipated to continue,especially in the areas of membrane gas separation and pervaporation separation.
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