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多嵌段聚醚型聚氨醋(SPEU)以其优良的力学性能和血液相容性,近年来被公认为是一种重要的心血管医用高分子材料。现在一般认为,SPEU的抗凝血性能主要取决于材料表面的化学组成和表面结构。基于上述原因以及分析手段发展的现状,X射线光电子能谱(XPS)现已作为一种较为有效的测试手段被用于SPEU的表面分析,以解释这种优良抗凝血材料的抗凝血机制。但是,前人的工作往往局限于不同化学组成、不同合成和成型加工条件等对材料表面特性的影响,而很少涉及反复形变引起的SPEU表面化学组成和血液相
Multi-block polyether polyurethane (SPEU) for its excellent mechanical properties and blood compatibility, in recent years has been recognized as an important cardiovascular medical polymer materials. It is now generally accepted that the anticoagulant properties of SPEU depend primarily on the chemical composition and surface structure of the material surface. Based on the above reasons and the development of analytical tools, X-ray photoelectron spectroscopy (XPS) has been used as a more effective test method for the surface analysis of SPEU to explain the anticoagulant mechanism of this excellent anticoagulant material . However, the previous work is often limited to different chemical composition, different synthesis and processing conditions on the surface properties of materials, and rarely involved in repeated deformation caused by SPEU surface chemical composition and blood phase