Paper Number
PG12 

Session
Polyelectrolytes, Self-assembling Systems & Gels

Title
Dissolution kinetics in tangential fluid flow across the interface of micellar gels

Presentation Date and Time
October 17, 2018 (Wednesday) 11:05

Track / Room
Track 3 / Bellaire

Authors (Click on name to view author profile)

1. Rafailovich, Miriam (Stony Brook University)
2. Li, Juyi (Stony Brook University)
3. Marmorat, Clement (Stony Brook University)
4. Zussman, Eyal (Technion Israel Institute of Technology, Mechanical Engineering)
5. Talmon, Ishi (Technion Israel Institute of Technology, Chemical Engineering)
6. Koifman, Naama (Technion Israel Institute of Technology, Chemical Engineering)
7. Jialong, Jiang (Stony Brook University)
8. Gersappe, Dilip (Stony Brook University)

Author and Affiliation Lines (in printed abstract book)
Miriam Rafailovich¹, Juyi Li¹, Clement Marmorat², Eyal Zussman³, Ishi Talmon⁴, Naama Koifman⁴, Jiang Jialong², and Dilip Gersappe^2
1Stony Brook University, Stony Brook, NY 11794-2275; ²Stony Brook University, Stony Brook, NY 11794-2275; ³Mechanical Engineering, Technion Israel Institute of Technology, Haifa, NY 11803; ⁴Chemical Engineering, Technion Israel Institute of Technology, Haifa, Israel

Speaker / Presenter 
Rafailovich, Miriam

Text of Abstract
Polaxomers have been proposed as biomimetic substitutes for physiological gels. Concern regarding their ability to resist swelling under fluid flows has impeded their implementation. Using a combination of techniques including cryo TEM and rapid X-ray imaging, we found that rapid flow rates stabilized the gels against dissolution. Energy balance calculations confirmed that disentanglement of individual micelles was not possible at time scales faster than the reptation time when the system response was that of a solid which dissipated the hydrodynamic force field via cooperative deformation.