Photo-responsive membrane surface: Switching from bactericidal to bacteria-resistant property.
Mater Sci Eng C Mater Biol Appl
; 84: 52-59, 2018 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-29519443
ABSTRACT
In this paper, a photo-responsive bactericidal and bacteria-resistant membrane was successfully prepared via the integration of atom transfer radical polymerization (ATRP) and click chemistry. Azide-functionalized polycationic poly (N, N-dimethyl-N-(2-(methacryloyloxy)ethyl)-N-((2-nitrobenzyl)oxy)-2-oxoethanaminium bromide) (PDMAEMA-NBE) was synthesized by ATRP. Then, the PDMAEMA-NBE was clicked on alkynyl-functionalized polyethersulfone (PES) membrane surface, and proved by X-ray photoelectron spectrometer (XPS). Upon UV irradiation, the polycationic surface would switch to polyzwitterionic one. Before and after the irradiation, the zeta potentials of the surface altered from +14.7 to -3.8mV, and the water contact angle decreased from 64.0° to 52.7°. The polycationic surface exhibited excellent bactericidal property and the dead bacteria could detach from the polyzwitterionic surface induced by the subsequent UV irradiation. It demonstrated that the designing of photo-responsive membrane surface could be a new strategy for antibacterial adhesion.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Membranas Artificiais
/
Antibacterianos
Limite:
Animals
Idioma:
En
Revista:
Mater Sci Eng C Mater Biol Appl
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
China