Paper Number
VP1 

Session
Pre-recorded Flash Presentations (virtual)

Title
Re-entrant melting in interpenetrating and interconnected grafted nano cylinders from amphiphilic star block copolymers

Presentation Date and Time
All Week (Asynchronous) Any Time

Track / Room
Pre-recorded Presentation / Virtual

Authors (Click on name to view author profile)

  1. Moghimi, Esmaeel (IESL, FORTH and University of Crete)
  2. Chubak, Iurii (University of Vienna)
  3. Cipelletti, Luca (University Montpellier 2)
  4. Mortensen, Kell (University of Copenhagen)
  5. Likos, Christos (University of Vienna)
  6. Vlassopoulos, Dimitris (IESL-FORTH and University of Crete)

Author and Affiliation Lines (in printed abstract book)
Esmaeel Moghimi1, Iurii Chubak2, Luca Cipelletti3, Kell Mortensen4, Christos Likos2 and Dimitris Vlassopoulos1
1IESL-FORTH and University of Crete, Heraklion 71110, Greece; 2University of Vienna, Vienna, Austria; 3University Montpellier 2, Montpellier, France; 4University of Copenhagen, Copenhagen, Denmark

Speaker / Presenter 
Moghimi, Esmaeel

Keywords
experimental methods; computational methods; colloids; gels; micelles; polymer solutions

Text of Abstract
A powerful combination of rheological, small angle X-ray and dynamic light scattering experiments along with computer simulations are utilized to examine the self-organization of a new class of tunable soft patchy colloidal particles of the star family, whose arms are diblock copolymers. These stars were synthesized by K. Ntetsikas and N. Hadjichristidis (KAUST). By tuning the solvent quality and block sequence a variety of intriguing opportunities to control the structure and dynamics of such soft colloids emerges, the most notable being the transition from high temperature disordered liquid to a low-temperature solid crystalline structure. The proposed state diagram with the re-entrant transition where an ordered/solid state can be formed both on heating and cooling shows the richness of the structural and rheological (linear and nonlinear) behavior of this kind of patchy particles. The main difference from respective ordered micelles when the solvophobic block is the inner one, is the organization into bridged grafted cylinders and interpenetrated grafted cylinders, respectively.