Dispersions of polymer particles in a liquid phase (latexes) have many important applications in coatings technology, medical imaging, and cell biology. A team of researchers has now developed a method to produce stable polystyrene dispersions with unprecedentedly large, and uniform, particle sizes.
Narrow size distributions are essential in many advanced technologies, but were previously difficult to produce photochemically.Dispersions of polymer particles in a liquid phase have many important applications in coatings technology, medical imaging, and cell biology. A French team of researchers have now developed a method, reported in the journalto produce stable polystyrene dispersions with unprecedentedly large, and uniform, particle sizes.
To obtain an external control over the process, the teams Muriel Lansalot, Emmanuel Lacôte, and Elodie Bourgeat-Lami at the Université Lyon 1, France, and colleagues, have turned to light-driven processes."Light-driven polymerization ensures temporal control, because polymerization proceeds only in the presence of light, whereas thermal methods can be started but not stopped once they are underway," Lacôte says.
The researchers therefore developed a fine-tuned chemical initiation system that responds to standard LED light in the visible range. This polymerization system, which is based on an acridine dye, stabilizers, and a borane compound, was the first to overcome the"300-nanometer ceiling," the size limit of UV and blue-light-driven polymerization in a dispersed medium.
Particle accelerators are essential tools in research areas such as biology, materials science and particle physics. Researchers are always looking for more powerful ways of accelerating particles to ...
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
New method produces homogeneous polystyrene microparticles in a stable dispersionDispersions of polymer particles in a liquid phase (latexes) have many important applications in coatings technology, medical imaging, and cell biology.
Read more »
Marvel’s Spider-Man 2 lets its villains evolve in ways comics never couldMarvel’s Spider-Man 2 treats both its heroes and villains with respect and nuance, achieving impactful storytelling heights that comics often can't.
Read more »
La La Land Streaming: Watch & Stream Online via NetflixLa La Land (2016) is a musical drama that follows a couple as they try to stay together while achieving success. Watch the film on Netflix.
Read more »
Multiple fatalities, injuries in Maine shooting, gunman still at largeGun violence is alarmingly common in the United States, a country where there are more guns than people and where attempts to clamp down on their spread are always met with stiff resistance.
Read more »