Abstract：Polyelectrolytes are charged polymers that are widely used in biomedical applications. This paper reviews various polyelectrolyte lubrication coatings. This review introduces the lubrication mechanisms and polyelectrolyte classifications which are based on the polyelectrolyte brush and hydration lubrication mechanisms. Then, the polyelectrolytes are divided into three categories. The review also describes how the polyelectrolytes adhere to the substrates through physical methods, coupled grafting and initiation grafting. The initiation grafting is described in detail as a reference for the design of polyelectrolyte lubrication coatings. Finally, the potential for polyelectrolyte lubrication coatings in the biomedical field is discussed with future prospects.
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2020, Vol. 60 
