Scalable antifouling reverse osmosis membranes utilizing perfluorophenyl azide photochemistry.
Macromol Rapid Commun
; 35(17): 1528-33, 2014 Sep.
Article
em En
| MEDLINE
| ID: mdl-25042670
ABSTRACT
We present a method to produce anti-fouling reverse osmosis (RO) membranes that maintains the process and scalability of current RO membrane manufacturing. Utilizing perfluorophenyl azide (PFPA) photochemistry, commercial reverse osmosis membranes were dipped into an aqueous solution containing PFPA-terminated poly(ethyleneglycol) species and then exposed to ultraviolet light under ambient conditions, a process that can easily be adapted to a roll-to-roll process. Successful covalent modification of commercial reverse osmosis membranes was confirmed with attenuated total reflectance infrared spectroscopy and contact angle measurements. By employing X-ray photoelectron spectroscopy, it was determined that PFPAs undergo UV-generated nitrene addition and bind to the membrane through an aziridine linkage. After modification with the PFPA-PEG derivatives, the reverse osmosis membranes exhibit high fouling-resistance.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Azidas
/
Purificação da Água
/
Hidrocarbonetos Fluorados
/
Membranas Artificiais
Idioma:
En
Revista:
Macromol Rapid Commun
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Estados Unidos