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以聚四氢呋喃醚二醇和４，４’－二苯甲烷二异氰酸酯、二羟甲基丙酸合成了含羧酸基团的聚氨酯，再通过ＮａＨ和丙磺酸内酯接上不同含量的丙磺酸基团。通过ＤＳＣ、动态粘弹谱、应力－应变测试等手段对其形态结构和力学性能进行了研究。结果表明，－ＳＯ－３Ｎａ＋的引入对ＰＵ离聚物的形态结构有较大的影响，－ＳＯ－３含量越高，相分离程度越大；拉伸强度先随－ＳＯ－３Ｎａ＋含量的增加达到最大值，尔后又下降。材料的亲水性随离子含量的增加而增大。用复钙法测试了同时含有－ＳＯ－３和－ＣＯ－２的水溶性聚氨酯样品的抗凝血性，结果表明这些样品均具有一定的抗凝活性。
Poly (tetrahydrofurfuryl ether glycol), 4,4’-diphenylmethane diisocyanate and dimethylol propionic acid were used to synthesize polyurethanes with carboxylic acid groups. Then, different contents of propane sulfonic acid Group. The morphology and mechanical properties were studied by means of DSC, dynamic viscoelastic spectroscopy and stress-strain test. The results show that the introduction of -SO-3Na + has a great effect on the morphology of PU ionomer. The higher the content of -SO-3, the greater the degree of phase separation. The tensile strength first increases with the increase of -SO-3Na + The maximum, then dropped again. The hydrophilicity of the material increases with the increase of the ion content. The anticoagulant properties of the water-soluble polyurethane samples containing both -SO-3 and -CO-2 were tested by the complex-calcium assay. The results showed that these samples all had some anticoagulant activity.