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SCC Annual Meeting Provides Insights for the Future
By: Katie Anderson (Schaefer), Cosmetics & Toiletries magazine
Posted: January 6, 2012
page 5 of 5
UV protection of hair through high-loaded sun filter carrier systems was the topic of Monika Beyer, PhD, of ROVI Cosmetics. Her team developed positively charged nanocapsules loaded with up to 50% organic UV filter that were found to adhere to the hair surface and form a resistant, robust film. The nanocapsules were comprised of an outer layer of a hydrophobically modified polymeric polysaccharide emulsifier, which was positively charged with a cationic co-emulsifier. Testing showed the nanocapsules to protect hair from color fade and from free radicals.
The final presentation was John Chiefari, PhD, from CSIRO Materials Science and Engineering. He introduced the concept of reversible addition- fragmentation chain transfer (RAFT), a new method to develop multifunctional polymers. Chiefari compared RAFT-controlled radical polymerization to traditional free radical polymerization, noting the main difference in structure of the polymers formed. This process can be used to control the composition, functionality and architecture of polymers, and it can create block copolymers that combine conflicting properties such as hydrophilicity and hydrophobicity. He referenced the development of triblock copolymers using RAFT to improve the bond strength in hair styling. On the horizon, according to Chiefari, is modifying matrix polymers with RAFT for improved compatibility and delivery.
The second day of the event ended on a high note, with the promise of polymer technologies that may lead to future innovations in personal care. Combined with the information presented throughout both days, attendees left the annual meeting with an arsenal to prepare them for later challenges.