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首页> 外文期刊>Journal of Polymers and the Environment >Synthesis of Biodegradable and Blood-Compatible Polyurethane Based on Poly(vinylpyrrolidone)
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Synthesis of Biodegradable and Blood-Compatible Polyurethane Based on Poly(vinylpyrrolidone)

机译：基于聚乙烯吡咯烷酮的可生物降解和血液相容性聚氨酯的合成

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摘要

Three kinds of degradable and blood-compatible polyurethane (PU) were synthesized by coupling hydroxyl-terminated poly(vinylpyrrolidone) (PVP) with diisocyanate-terminated PU. The chemical structure and molecular weight of the synthesized copolymer were systematically characterized by nuclear magnetic resonance spectrum ((HNMR)-H-1), Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC). The hydrophilicity and water absorption of the synthesized PU was increased by introducing PVP segment. To evaluate the hemocompatibility and degradability of the modified PU films, the extent of platelet adsorption, plasma recalcification time, hemolysis and degradation were measured. All results indicated that the blood compatibility and degradability of the PU films were improved significantly after introduction PVP segment into PU.
机译：通过将羟基封端的聚乙烯吡咯烷酮（PVP）与二异氰酸酯封端的PU偶联，合成了三种可降解且具有血液相容性的聚氨酯（PU）。通过核磁共振谱（（HNMR）-H-1），傅立叶变换红外光谱（FTIR）和凝胶渗透色谱（GPC）对合成共聚物的化学结构和分子量进行了系统表征。通过引入PVP链段可以提高合成PU的亲水性和吸水性。为了评估改性PU膜的血液相容性和降解性，测量了血小板吸附程度，血浆重新钙化时间，溶血和降解。所有结果表明，将PVP片段引入PU后，PU膜的血液相容性和降解性得到了显着改善。

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