Jump to main content
Jump to site search

Issue 4, 2011
Previous Article Next Article

Grafting mixed responsive brushes of poly(N-isopropylacrylamide) and poly(methacrylic acid) from gold by selective initiation

Author affiliations

Abstract

Mixed polymer brushes consisting of poly(N-isopropylacrylamide) (PNIPAM) and poly(methacrylic acid) (PMAA) were prepared at room temperature by a sequential combination of surface-initiated atom transfer radical polymerization (SI-ATRP) and iniferter-mediated photopolymerization (SI-IMP). Mixed monolayers of disulfides of ATRP initiator and IMP iniferter on gold substrates were employed for independent initiation of the two polymer components. As the polymerization of PNIPAM and PMAA was performed in successive steps, the chain length and the corresponding brush height of the constituents could be individually controlled. Grazing angle Fourier transform infrared spectroscopy (FTIR) and ellipsometry were performed to monitor the component-specific formation of the grafts. The responsive behavior of the mixed polymer brushes under different pH was investigated by contact angle (CA) measurements, atomic force microscopy (AFM) and in situellipsometry. Reversible structural reorganization and variation of brush thickness and of wetting characteristics were monitored.

Graphical abstract: Grafting mixed responsive brushes of poly(N-isopropylacrylamide) and poly(methacrylic acid) from gold by selective initiation

Back to tab navigation

Publication details

The article was received on 01 Dec 2010, accepted on 15 Dec 2010 and first published on 28 Jan 2011


Article type: Paper
DOI: 10.1039/C0PY00393J
Citation: Polym. Chem., 2011,2, 879-884
  •   Request permissions

    Grafting mixed responsive brushes of poly(N-isopropylacrylamide) and poly(methacrylic acid) from gold by selective initiation

    X. Sui, S. Zapotoczny, E. M. Benetti, M. Memesa, M. A. Hempenius and G. J. Vancso, Polym. Chem., 2011, 2, 879
    DOI: 10.1039/C0PY00393J

Search articles by author

Spotlight

Advertisements