Surface modification of poly(aryl ether ether ketone) (PEEK) film by covalent coupling of amines and amino acids through a spacer arm
(1997) Journal of Polymer Science. Part A, Polymer Chemistry — Vol. 35, n° 17, p. 3779-3790 (1997)
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- Abstract
- Using the wet-chemistry technique, we selectively reduced the surface of the PEEK film (PEEK-OH), and covalently fixed hexamethylene diisocyanate by addition onto the hydroxyl functions. The resulting PEEK-NCO film displayed free isocya nate termini, the basic hydrolysis of which gave the PEEK-NH2 film in 85% extent of derivatization. The PEEK-NCO film reacted with trifluoroethylamine in toluene, trifluoroethylamine in PBS buffer, GABA, and lysine in PBS buffer to furnish, respectively, the PEEK-CF3(A), PEEK-CF3(B), PEEK-CO2H, and PEEK(NH2)CO2H films in 80%, 45%, 30%, and 25% extents of derivatization, as determined from the F/C and N/C atomic ratios recorded in the corresponding XPS spectra. The surface reactivity of the PEEK-NH2 and PEEK-NCO films was assayed by coupling with appropriate H-3 labels followed by liquid scintillation counting of the sample-associated radioactivity. The PEEK-NH2, PEEK-CO2H, and PEEK-(NH2)CO2H films were used as substrates for the cultivation of CaCo2 epithelial cells; the presence of surface amine and carboxyl functions significantly improves the cellular adhesion and growth. (C) 1997 John Wiley & Sons, Inc.
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Noiset, O., Schneider, Y.-J., & Marchand-Brynaert, J. (1997). Surface modification of poly(aryl ether ether ketone) (PEEK) film by covalent coupling of amines and amino acids through a spacer arm. Journal of Polymer Science. Part A, Polymer Chemistry, 35(17), 3779-3790. https://doi.org/10.1002/(SICI)1099-0518(199712)35:17<3779::AID-POLA17>3.0.CO;2-A (Original work published 1997)