Micelles were formed via the single self-assembly of amphiphilic block copolymer PAA-PI-PS and co-assembly of PAA-PS and PAA-PI. Importantly, the polymer is complexed with diamine molecules in pure THF solution prior to water titration or quickly addition process which is the key of forming controlled micelle structure. Inner-multilayer colloidals were assembled by triblock PAA-PI-PS which having the immisible PI and PS blocks at specific amine condition. Also, micelles with the segregation of hydrophobic blocks trapped in the same nanoparticle core have been produced through co-self-assembly of two block copolymers in THF/water dilute solution. The dissolution of two block copolymer sharing the same polyacrylic acid PAA blocks in THF undergoes consequent aggregation and phase separation through either slow water titration or quick water addition that triggers the micellar formation. The combination and comparison of the two water addition kinetic pathways are the keys of forming multicompartment structures at high water content.

Kinetic control of block copolymer self-assembly into multicompartment and novel geometry nanoparticles

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.