When the value of SO2/NH3 is 10/6, the content of -SO3H is 49.93% of the surficial introduced polar groups, the modified PET film gains the best blood compatibility, APTT achieves 62.0s. 3.

• SO2/NH3值为10/6，表面-SO3H占引入极性基团的49.；93%25时材料的抗凝血性能最佳，APTT达到62