Preparation of bactericidal cationic PDMS surfaces using a facile and efficient approach

Preparation of bactericidal cationic PDMS surfaces using a facile and efficient approach Article history: Two cationic polymers containing vinyl and quaternary ammonium groups were successfully grafted on Received 22 July 2015 silicone surfaces containing Si H groups. The reaction was carried out by straightforward hydrosilylation Received in revised form 30 October 2015 reaction in water without using exogenous catalyst and without doping the surface with Si H groups. Accepted 8 November 2015 The Si H content was varied by changing the curing time or the ratio between silicone components. Available online 12 November 2015 14 15 The surfaces obtained exhibited quaternary ammonium densities ranging from 1.8 × 10 to 2.8 × 10 charge/cm and higher polarity and hydrophilicity in comparison with non grafted surfaces. Bactericidal Keywords: effects of these surfaces against Escherichia coli and Staphylococcus epidermidis were evidenced. This Bactericidal surfaces study have evidenced also the fouling of the poly(quaternary ammonium) (PQA) surfaces by contact Surface charge density with plasmatic proteins probably limiting their use in some biomedical field (e.g. implantable medical Cationic polymers devices). Silicones Hydrosilylation © 2015 Elsevier B.V. All rights reserved. Protein adsorption 1. Introduction advantages comparing to small molecules, i.e. high surface cover- age and stability as well as high bioactivity. Antimicrobial coatings are used in various http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Preparation of bactericidal cationic PDMS surfaces using a facile and efficient approach

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2015.11.078
Publisher site
See Article on Publisher Site

Abstract

Article history: Two cationic polymers containing vinyl and quaternary ammonium groups were successfully grafted on Received 22 July 2015 silicone surfaces containing Si H groups. The reaction was carried out by straightforward hydrosilylation Received in revised form 30 October 2015 reaction in water without using exogenous catalyst and without doping the surface with Si H groups. Accepted 8 November 2015 The Si H content was varied by changing the curing time or the ratio between silicone components. Available online 12 November 2015 14 15 The surfaces obtained exhibited quaternary ammonium densities ranging from 1.8 × 10 to 2.8 × 10 charge/cm and higher polarity and hydrophilicity in comparison with non grafted surfaces. Bactericidal Keywords: effects of these surfaces against Escherichia coli and Staphylococcus epidermidis were evidenced. This Bactericidal surfaces study have evidenced also the fouling of the poly(quaternary ammonium) (PQA) surfaces by contact Surface charge density with plasmatic proteins probably limiting their use in some biomedical field (e.g. implantable medical Cationic polymers devices). Silicones Hydrosilylation © 2015 Elsevier B.V. All rights reserved. Protein adsorption 1. Introduction advantages comparing to small molecules, i.e. high surface cover- age and stability as well as high bioactivity. Antimicrobial coatings are used in various

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2016

References

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