Naslov
PBO-PEO wormlike micelles in dilute and semidilute solutions

Autori
Castillo, Ronaldo ; Vinceković, Marko ; Sarmiento, Erik ; Garza, Cristina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
XXIV Meeting of Science and Technology Complex Fluids

Mjesto i datum
San Luis Potosí, Meksiko, 15.08.2011. - 19.08.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
complex fluids; wormlike micelles; PB-PEO diblock copolymer

Sažetak
Complex fluids are different from simple fluids in that they possess a "structure" at mesoscopic length scales i.e., intermediate between microscopic and macroscopic length scales. Understanding the behavior of complex fluids is important both from the fundamental and from the applied points of view, especially for an enormous host of new materials (colloidal suspensions, microemulsions, liquid crystals, surfactant mixtures, polymeric solutions etc.). Typical example of a complex fluid is wormlike micelles in solutions. Wormlike micelles are elongated flexible selfassembled structures formed by the aggregation of amphiphilic molecules. Above a threshold concentration (c*), they entangle into a dynamic network, reminiscent of polymer solutions, and display remarkable viscoelastic properties, which have been exploited in numerous industrial and technological fields (heat-transfer fluids, hard-surface cleaners, drag reduction agents, personal care products, drug delivery etc.). Amphiphilic diblock copolymers can spontaneously selfassemble in aqueous solutions to form supramolecular structures among them wormlike micelles are the most important. An understanding of selfassembling of amphiphilic diblock copolymers in dilute and semidilute solution as well as dynamics under shear flow facilitate their application.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA