20. Jul 2021 | Application Areas
Novel high-performance antibacterial film
Due to the extraordinary photocatalytic effect, TiO2 nanoparticles (TiO2 NPs) have been widely applied in antibacterial fields. However, the agglomeration problem and dependence on light of TiO2 NPs seriously limit their antibacterial activity and practical applications.
A new study proposes a facile and effective strategy for the preparation of polyacrylate/TiO2 nanocomposite antibacterial films by emulsion polymerisation. A quaternary ammonium cationic ligand Vinylbenzyldimethyldodecylammonium chloride (VDAC) was successfully synthesised, which acted as a trinity of cationic ligand, organic antibacterial agent and polymerisable emulsifier to improve the dispersion of TiO2 NPs by electrostatic interaction and play the synergistic antibacterial effect with TiO2 NPs.
Stable antibacterial performance
The results demonstrated that TiO2 NPs were truly uniformly dispersed in the matrix and the particles sizes were reduced to around 5 nm. Moreover, the systematic investigations of antibacterial performance indicated that the prepared nanocomposite films displayed excellent antibacterial and antibiofouling abilities through the synergistic antibacterial effect of TiO2 NPs and VDAC.
The films could maintain close to 100 % antibacterial rate and completely inhibit bacterial adhesion and biofilm formation in 7 days, exhibiting long-term and stable antibacterial performance.
The study has been published in Progress in Organic Coatings, Volume 157, August 2021.
Understanding Coatings Raw Materials
What are paints and coatings composed of? This efficient reference book offers an optimum overview of the different constituents of the different types of coatings, explaining the chemistry, system and impacts of coating raw materials. That way, newcomers to the field of coatings gain a quick basic knowledge whereas chemists and laboratory assistants will find valuable insights on future trends and developments in the field of raw materials.
You are currently not logged in
To leave a comment, please log in.
There was an error while sending your comment. Please try again.
Your comment was too long. There are a maximum of 2048 symbols allowed!