Electrophoretic deposition of chitosan

被引：127

作者：

Simchi, A. ^{[1
,2
,3
]}

Pishbin, F. ^{[1
]}

Boccaccini, A. R. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2BP, England

[2] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran

[3] Sharif Univ Technol, Inst Nanosci & Nanotechnol, Tehran, Iran

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 26期

关键词：

Deposition; Kinetics; Chitosan; Charge mobility; Biomaterials; ELECTROMIGRATION; OLIGOMERS; BEHAVIOR; POLYMER;

D O I：

10.1016/j.matlet.2009.07.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrophoretic deposition (EPD) of chitosan on metallic substrates was investigated. The electrophoretic mobility of the natural biopolymer in aqueous solution as a function of pH was studied. Because the protonation/deporotonation of chitosan is pH-dependent, the electrophoretic mobility and deposition rate is shown to increase with increasing pH from 2.9 to 4.1. The film growth rate is estimated to vary in the range 0.02-0.08 mu m/s depending on the pH value. At high growth rates (>0.05 mu m/s), a porous film is obtained due to hydrogen entrapment. The EPD method developed here is applicable for the surface modification of metal implants by chitosan to develop novel bioactive coatings. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2253 / 2256

页数：4

共 21 条

[1] Electromigration of chitosan D-glucosamine and oligomers in dilute aqueous solutions [J].