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Act as nonantigenic, biodegradable and readily available, albumin has been used as a kind of bio-materials, such as drug delivery[1] and novel hydrophilic carriers[2] Here, in order to get biopolymer carriers for multi-functional drug delivery system,we selected bovine serum albumin (BSA) as biopolymer, N-vinyl pyrrolidone (NVP) and acrylic acid (AA) as the functional monomers.