Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 121, Issue 3, Pages 534-540Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2010.02.019
Keywords
Polyimide; Dopamine; Silver; Antibactericidal; Nanoparticle
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Funding
- Beijing Nova Program [2006816]
- Program for New Century Excellent Talents in University (NCET)
- Program for Changjiang Scholars and Innovative Research Team in University, Ministry of Education of China [IRT0807]
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Immobilization of silver nanoparticles on the dopamine functionalized polyimide (PI) films was carried out by photo-induced silver ion-reduction under atmosphere conditions. The dopamine has been successfully deposited on the PI surface in mild aqueous environments. The effects of pH, dopamine concentration and reaction time on the dopamine polymerization were investigated. The water contact angles of the poly(dopamine) functionalized PI films reduced remarkably in comparison with that of the pristine PI film. The chemical composition and structure of the UV-induced deposited-silver on the modified PI films were characterized by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The topography of the modified PI films was investigated by scanning electron microscope (SEM). The deposited poly(dopamine) layer acted as binding sites for the silver ions. The silver-plated PI films showed good antibacterial activity due to that biofilm formation was inhibited on the polymeric surfaces in contact with bacteria. (C) 2010 Elsevier B.V. All rights reserved.
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