摘要 |
The invention relates to a polymer comprising structural units of formula and formula wherein R1, R2, R5 and R6 are independently hydrogen, a methyl group, or—COOH, only one of R1 and R2 or R5 and R6 is—COOH; R3 and R7 are independently hydrogen, or a methyl group; R4 is—COOH,—CONH2 or—OH, when R4 is—OH, R1, R2 and R3 are respectively hydrogen; and R8 is—COO,—CONH, or—O—, when R8 is—O—, R5, R6 and R7 are respectively hydrogen. Methods for preparing and using the polymer are also described herein.
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