Coating of two polyether-polyurethanes and polyethylene with a heparin-poly-(vinyl alcohol) hydrogel.

Coating of two polyether-polyurethanes and polyethylene with a heparin-poly-(vinyl alcohol) hydrogel.
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用肝素-聚(乙烯醇)水凝胶涂覆两种聚醚-聚氨酯和聚乙烯。

DOI:
10.1016/0142-9612(86)90104-3
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发表时间:
1986
期刊:
影响因子:
14
通讯作者:
Sefton,MV
Sefton,MV
中科院分区:
工程技术1区
文献类型:
--
作者:
Evangelista,RA;Sefton,MV

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用肝素-聚(乙烯醇)水凝胶涂覆两种聚醚-聚氨酯弹性体(Pellethane®和Biomer®)和聚乙烯。涂层制备中所需的表面改性包括对聚醚聚氨酯的辉光放电清洗和酸处理,对聚乙烯的辉光放电清洗和铬酸氧化。化学改性增加了表面润湿性。通过衰减全反射傅里叶变换红外光谱法进行的表面分析表明,酸处理导致Pellethane和Biomer的聚醚链段水解。在涂覆的膜上观察到延长的部分凝血活酶时间。甲苯胺蓝法测定肝素在涂膜溶液中的含量,结果表明肝素以共价键结合在涂膜中。这种涂层技术将肝素-聚(乙烯醇)水凝胶的有用性扩展到许多医学上重要的基质材料。
Two polyether-polyurethane elastomers (Pellethane® and Biomer®) and polyethylene were coated with a heparin-poly(vinyl alcohol) hydrogel. The requisite surface modification in preparation for coating consisted of glow discharge cleaning and acid treatment for the polyether-polyurethanes and glow discharge cleaning and chromic acid oxidation for polyethylene. The chemical modifications increased surface wettability. Surface analysis by attenuated total reflectance Fourier transform infrared spectroscopy indicated that the acid treatment caused hydrolysis of the polyether segments of Pellethane and Biomer. Prolonged partial thromboplastin times were observed on the coated films. The results of toluidine blue assay of heparin in the solution in which the coated films were immersed for a long time suggested that heparin was covalently bound in the coating. Such coating techniques extend the usefulness of the heparin-poly(vinyl alcohol) hydrogel to a number of medically important substrate materials.
固定化肝素的化学特性:肝素-PVA
DOI: --
发表时间: 1984
期刊:
影响因子: --
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发表时间: 1981
期刊:
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影响因子: 4.2
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DOI: 10.1002/jbm.820190206
发表时间: 1985
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作者:
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DOI: 10.1002/jbm.820170212
发表时间: 1983-01-01
期刊: JOURNAL OF BIOMEDICAL MATERIALS RESEARCH
影响因子: --
作者:
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通讯作者: SEFTON, MV