Graft Polymerization of Anti-Fouling PEO Surfaces by Liquid-Free Initiated Chemical Vapor Deposition

Poly(ethylene oxide) (PEO), a biomedically important polymer, has been synthesized using a novel liquid-free initiated chemical vapor deposition (iCVD) via a ring-opening cationic polymerization mechanism. In addition, a grafting scheme was used to graft polymerize PEO onto amine-terminated surfaces...

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Bibliographic Details
Published in:Macromolecules 2012-09, Vol.45 (17), p.6915-6922
Main Authors: Bose, Ranjita K, Nejati, Siamak, Stufflet, David R, Lau, Kenneth K. S
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:Poly(ethylene oxide) (PEO), a biomedically important polymer, has been synthesized using a novel liquid-free initiated chemical vapor deposition (iCVD) via a ring-opening cationic polymerization mechanism. In addition, a grafting scheme was used to graft polymerize PEO onto amine-terminated surfaces. FTIR, NMR, and XPS showed a stoichiometric match to linear PEO homopolymer. In addition, XPS confirmed the graft polymerization of PEO to amine anchors on silicon with a high graft density. XPS and GPC were used to measure independently the grafted polymer molecular weight that also showed a narrow weight distribution. The grafted iCVD PEO surfaces were effective in minimizing nonspecific protein adsorption using a fluorescently labeled bovine serum albumin assay.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma301234z