Abstract
Photocurable formulations containing trifunctional thiol, trifunctional ene, and antibacterial allylimidazolium salts have been employed for transparent antibacterial coatings. The antibacterial component 1-allyl-3-dodecylimidazolium salt (ADIm) is prepared and chemically attached to polymer networks using a one-step thiol-ene photocuring reaction. Ultra-small (USANS) and small angle neutron scattering (SANS) measurements show that the photocured polymers are loosely networked three-dimensional structures with a mass fractal of approximately 2.7 ± 0.2. The minimum inhibitory concentration (MIC) for the ADIm was determined to be 500 μg/ml and 15.63 μg/ml for Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) bacteria, respectively. Coating formulations containing 10 mol% of the antibacterial ADIm photocured on glass substrates showed strong antibacterial activity against environmental bacteria such as E. coli and/or S. aureus.
| Original language | English |
|---|---|
| Pages (from-to) | 53-60 |
| Number of pages | 8 |
| Journal | Reactive and Functional Polymers |
| Volume | 87 |
| DOIs | |
| Publication status | Published - 2015 Feb |
Bibliographical note
Funding Information:MHK acknowledges partial financial support from Korea Institute of Science and Technology (2v03611). DJA acknowledges the support by the National Research Foundation (MSIP 2014023305, 2014010072) of Korea. We have benefited from Dr. Seong, B.K. of the HANARO at Korea Atomic Energy Research Institute for experimental support of 18 m-SANS. A part of this work was presented at the13th RadTech Asia held during May 20 to 24, 2013 in Shanghai, China. Reviewers provided valuable comments.
Keywords
- Allylimidazolium salts
- Antibacterial coating
- Antibacterial polymers
- Mass fractal network
- Thiol-ene photocuring
ASJC Scopus subject areas
- General Chemistry
- Environmental Chemistry
- Biochemistry
- General Chemical Engineering
- Polymers and Plastics
- Materials Chemistry