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4. Dec 2020 | Application Areas

Antimicrobial acrylic coating modified with guanidinium oligomer

Researchers describe the preparation and the properties of an antimicrobial acrylic coating modified with guanidinium oligomer.
The antimicrobial coating retains an excellent antimicrobial property even after being laundered with detergent solution. 
Image source: WikiImages - Pixabay (symbol image).

An acrylic copolymer containing epoxy groups was synthesised by free radical polymerisation of glycidyl methacrylate, methyl methacrylate and butyl acrylate.

Afterwards, polyhexamethylene guanidine hydrochloride (PHMG) was chemically bonded with the resin through a reaction between the epoxy groups of the resin and the amino groups of PHMG to generate non-leaching and permanent antimicrobial acrylic coating.

Excellent antimicrobial property

When the content of PHMG reaches 1.0 wt%, the inhibition factors against E. coli and S. aureus were respectively 99.992% and 99.994%. The antimicrobial coating retains an excellent antimicrobial property even after being laundered with detergent solution. Moreover, the hydrophilicity of the antimicrobial coating was increased after the introduction of polar PHMG.

The study has been published in Journal of Coatings Technology and Research volume 17, 2020.

EC Techb Report Sustainability


EC Tech Report Sustainability

Making coating systems more environmentally compatible is a burning issue for everyone in the industry, and one that is being fuelled by the European Green Deal. Learn all you need to know about sustainable coatings, how to produce coatings in a more environmentally friendly way and how to give coated products a longer service life. You will find an overview in the EC Tech Report of the many various approaches being adopted. We will dive deep into the European Green Deal, its key points and main purpose as well as consequences for the coating industry, see which new raw materials are being developed to replace or lower the content of products in the SVHC group and learn about different approaches to sustainable paint formulation.

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