【Abstract】 A novel C₆0-styrene-maleic anhydride copolymer was prepared with radical polymerization. 50 mg of C₆0 and 1 g of styrene and 1 g of maleic anhydride were dissolved in 20 mL of o-dichlorobenzene, then was initiated by 200 mg of BPO at 70 ℃ under the protection of Ar for 32 h. The copolymer was obtained as a brown solid. The structure of copolymer was characterized by UV and FTIR. GPC analyses shows that its average molecular weight M_w is 13 000. The copolymer is soluble in THF, DMSO and water. The surface tension of 0.5% of copolymer aqueous solution was determined to be 54.6×10^-3 N/m（20 ℃）. TEM analyses shows that the copolymer is a kind of water-soluble nanosphere with the average diameter of about 60 nm.更多还原