Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 2, Issue 12, Pages 3642-3647Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am100811q
Keywords
carbon nanotubes; atom transfer radical polymerization; protein adsorption; antifouling membranes
Funding
- Ministry of Education
- National Science Council of Taiwan [NSC 99-2221-E-033-007-MY3]
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Multiwalled carbon nanotubes functionalized with poly(sulfone) (PSF) and poly(sulfobetaine methacrylate) (PSBMA) (MWNT-PSF/PSBMA) have been prepared through sequential atom transfer radical polymerization. The structure of MWNT-PSF/PSBMA hybrid has been characterized with FTIR, Raman spectroscopy, and high-resolution transmission electron microscopy. Incorporation of PSBMA chains to MWNTs introduces amphiphilic and protein-resistant properties to MWNT-PSF/PSBMA. Addition of I wt % MWNT-PSF/PSBMA to PSF films significantly improves their protein-resistant characteristic, as the composite films show a 4.4% of protein adsorption compared to poly(styrene) Petri dishes. The PSF/MWNT-PSF/PSBMA composite has been applied to prepare antifouling uitrafiltration membranes for protein separation. This work demonstrates an effective and convenient approach to prepare low-protein-adsorption surfaces and antifouling membranes.
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