Ionic liquids are organic salts that are liquid at ambient temperature .They have attracted much attention in both academia and industry as nonvolatile

recyclable media for a wide range of chemical processes including extraction

electro-chemistry and organic reaction .As a reaction media

their ion structure

high polar and viscosity properties have leaded to significant improvements in rate and yield in many polymerizations .These also have a influence in molecular weight and polymer structure .In this work

the free radical polymerization and the atom transfer radical polymerization ( ATRP) in which ionic liquids were used as solvents are discussed mainly on the basis of the kinetics

mechanism and the polymer structure as well as the recycle of the ionic liquids according to the results published in recent years .