Magnetically Cured Macroradical Epoxy as Antimicrobial Coating

The radical‐bearing epoxy monomer could be the ideal embodiment of multifunctionality in epoxy‐based materials. This study demonstrates the potential of macroradical epoxies as surface coating materials. A diepoxide monomer derivatized with a stable nitroxide radical is polymerized with a diamine ha...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry, an Asian journal an Asian journal, 2023-07, Vol.18 (13), p.e202300237-n/a
Main Authors: Capricho, Jaworski C., Liao, Tzu‐Ying, Chai, Boon Xian, Al‐Qatatsheh, Ahmed, Vongsvivut, Jitraporn (Pimm), Kingshott, Peter, Juodkazis, Saulius, Fox, Bronwyn Louise, Hameed, Nishar
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
Biocides
biofilms
Chemistry
Curing
Diamines
epoxy resins
Infrared spectroscopy
Liquid chromatography
magnetic materials
Magnetic properties
Magnets
microbiological influence corrosion
Monomers
Photoelectrons
Polymer blends
Polymerization
Protective coatings
Rheological properties
Spectrum analysis
stable nitroxide radicals
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The radical‐bearing epoxy monomer could be the ideal embodiment of multifunctionality in epoxy‐based materials. This study demonstrates the potential of macroradical epoxies as surface coating materials. A diepoxide monomer derivatized with a stable nitroxide radical is polymerized with a diamine hardener under the influence of a magnetic field. The magnetically oriented and stable radicals in the polymer backbone render the coatings antimicrobial. The unconventional use of magnets during polymerization proved crucial in correlating the structure‐property relationships with antimicrobial performance inferred from oscillatory rheological technique, polarized macro‐attenuated total reflectance – infrared (macro‐ATR‐IR) spectroscopy and X‐ray photoelectron spectroscopy (XPS). The magnetic thermal curing influenced the surface morphology, resulting in a synergy of the coating's radical nature with microbiostatic performance assessed using the Kirby‐Bauer test and liquid chromatography – mass spectroscopy (LC–MS). Further, the magnetic curing of blends with a traditional epoxy monomer demonstrates that radical alignment is more critical than radical density in imparting biocidal behavior. This study shows how the systematic use of magnets during polymerization could pave for probing more significant insights into the mechanism of antimicrobial action in radical‐bearing polymers. Antimicrobial potential of magnetically cured macroradical epoxy coatings. Surface segregation of stable radicals under a magnetic field render the epoxy coatings microbiostatic.
ISSN:1861-4728
1861-471X
DOI:10.1002/asia.202300237