Issue 11, 2012
From the journal:

Journal of Materials Chemistry

Preparation of antibacterial surfaces by hyperthermal hydrogen induced cross-linking of polymer thin films†

Solmaz Karamdoust,a   Binyu Yu,b   Colin V. Bonduelle,a   Yu Liu,b   Greg Davidson,ac   Goran Stojcevic,c   Jun Yang,b   Woon M. Lauadef  and  Elizabeth R. Gillies*ag  

* Corresponding authors

a Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario, Canada

b Department of Mechanical & Materials Engineering, The University of Western Ontario, London, Ontario, Canada

c LANXESS Inc., 999 Collip Circle, UWO Research Park, London, Ontario, Canada

d Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond Street, London, Ontario, Canada

e Surface Science Western, 999 Collip Circle, UWO Research Park, London, Ontario, Canada

f Chengdu Green Energy and Green Manufacturing Technology R&D Center, Institute of Chemical Materials, China Academy of Engineering Physics, 355, 2nd Tengfei Rd, Southwest Airport Economic Development Zone, Shuangliu, Chengdu, Sichuan Province, China

g Department of Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario, Canada

Abstract

The covalent immobilization of polymers on surfaces has the potential to impart new properties and functions to surfaces for a wide range of applications. However, most current methods for the production of these surfaces involve multiple chemical steps or do not impart a high degree of control over the chemical functionalities at the surface. Described here is the preparation of surfaces covalently functionalized with quaternized poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA), a known antibacterial polymer. PDMAEMA was coated onto octadecyltrimethoxysilane modified silicon wafers and was then cross-linked by the selective cleavage of C–H bonds using a hyperthermal hydrogen treatment. The surfaces were then quaternized with ethyl bromide. At each step the surfaces were characterized extensively using techniques including atomic force microscopy, contact angle measurements and X-ray photoelectron spectroscopy. These results demonstrated a high degree of functional group retention throughout the process. The antibacterial properties of the surfaces against Gram-positive S. aureus and Gram-negative E. coli were investigated using a “drop test” assay. Furthermore, the process was successfully applied to produce antibacterial butyl rubber surfaces, demonstrating the versatility of the method for grafting onto unfunctionalized hydrocarbon surfaces.

Graphical abstract: Preparation of antibacterial surfaces by hyperthermal hydrogen induced cross-linking of polymer thin films

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Article information

DOI
https://doi.org/10.1039/C2JM15814K
Article type
Paper
Submitted
11 Nov 2011
Accepted
19 Jan 2012
First published
30 Jan 2012

J. Mater. Chem., 2012,22, 4881-4889

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Preparation of antibacterial surfaces by hyperthermal hydrogen induced cross-linking of polymer thin films

S. Karamdoust, B. Yu, C. V. Bonduelle, Y. Liu, G. Davidson, G. Stojcevic, J. Yang, W. M. Lau and E. R. Gillies, J. Mater. Chem., 2012, 22, 4881 DOI: 10.1039/C2JM15814K

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