Tailoring the electrochemical degradation of iron protected with polypyrrole films for biodegradable cardiovascular stents

被引：19

作者：

Cysewska, Karolina ^{[1
,2
]}

Macia, Lucia Fernandez ^{[2
]}

Jasinski, Piotr ^{[1
]}

Hubin, Annick ^{[2
]}

机构：

[1] Gdansk Univ Technol, Fac Elect Telecommun & Informat, Ul Narutowicza 11-12, PL-80233 Gdansk, Poland

[2] Vrije Univ Brussel, Res Grp Electrochem & Surface Engn, Pl Laan 2, B-1050 Brussels, Belgium

来源：

ELECTROCHIMICA ACTA | 2017年 / 245卷

关键词：

polypyrrole; iron; corrosion odd random phase electrochemical; impedance spectroscopy; biodegradable metallic implant; ACID SULFATE-SOLUTIONS; CORROSION PROTECTION; CONDUCTING POLYMERS; MILD-STEEL; IMPEDANCE SPECTROSCOPY; NONLINEAR DISTORTIONS; SALICYLATE SOLUTION; PART; COATINGS; POLYANILINE;

D O I：

10.1016/j.electacta.2017.05.172

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The degradation of polypyrrole (PPy) coated iron is studied in phosphate buffer saline solution at 37 degrees C by odd random phase multisine electrochemical impedance spectroscopy (ORP-EIS). PPy is electro-polymerized with anti-inflammatory salicylates incorporated in the film, as a drug release system. The modelling of EIS over time provides the quantitative description of the corrosion behaviour of the material. Thus, the reliable analysis of the degradation stages of PPy coated iron is attained. The outcome of the present study shows that the degradation of iron can be tailored by tuning the properties of the PPy coating for possible medical applications. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：319 / 328

页数：10

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