Anton Paar has published an Application Note on the use of zeta potential analysis in enabling the detection of functional groups introduced by additives in polymer compounds.
Microorganisms are ubiquitous in daily-life applications. They adhere to surfaces, grow, and multiply to form a colony of cells. This behavior can cause serious problems in particular in the food industry and in sanitary applications.
Maintenance-free sterile surfaces are a promising strategy to meet the requirement of long-term or even permanent antimicrobial activity, as the necessity to release small molecule biocides can be eliminated. Unlike common disinfectants that are applied as a solution, emulsion or spray, and require regular replacement, contact biocides maintain long-term antimicrobial activity.
The Note details the investigation of four blends of polypropylene and poly(2-oxazoline) derivatives for their antimicrobial activity. The copolymers were prepared starting from poly(2-nonyl-2-oxazoline), pN100, by continued acid-mediated hydrolysis of the amide bonds.