Novel surfactant shows good antimicrobial performance
Hujun Xu and co-workers recently published a study on the synthesis and properties of novel phenylenediamine Gemini surfactants. These surfactants are showing good surface activity and foaming properties as well a good antimicrobial performance.
Evalutation of surface activity, foaming properties and antibacterial performance
In their work, a two‐step method was adopted to synthesize a series of novel Gemini surfactants using N,N‐dimethylalkyl amines (alkyl length = C12, C16 and C18), epichlorohydrin, and n‐phenyllenediamine as starting materials. The products were characterized using mass spectroscopy (MS) and nuclear magnetic resonance spectroscopy (1H NMR). Systematic experiments were conducted to evaluate their surface activity, foaming properties, and antibacterial performance. Results showed the critical micelle concentrations (CMC) of the C12‐based, C16‐based, and C18‐based phenylenediamine surfactants were 3.295 × 10−3, 2.532 × 10−4, and 3.140 × 10−4 mol L−1 at 298 K, respectively, with corresponding surface tension (γcmc) values of 28.24, 31.95, and 35.06 mN m−1 under the same conditions. The Gemini surfactants showed not only good surface activity and foaming properties, but also demonstrated good antimicrobial performance against Gram‐positive and Gram‐negative bacteria and fungi.
The paper has been published on 10 May 2019 in Journal of Surfactants and Detergents