Paper Number
BB24 Keynote
Session
Biomaterials and Biofluid Dynamics
Title
Revealing processability of structured fluids comprising biopolymers by microfluidics
Presentation Date and Time
October 22, 2019 (Tuesday) 3:45
Track / Room
Track 6 / Room 306B
Authors
- Lynch, Matthew (Procter & Gamble, Corporate Functions)
- Lin, Yu-Jiun (University of Delaware, Chemical and Biomolecular Engineering)
- Wagner, Norman J. (University of Delaware, Chemical and Biomolecular Engineering)
- Furst, Eric M. (University of Delaware, Chemical and Biomolecular Engineering)
- Mourafetis, Christine (University of Delaware, Chemical and Biomolecular Engineering)
Author and Affiliation Lines
Matthew Lynch1, Yu-Jiun Lin2, Norman J. Wagner2, Eric M. Furst2, and Christine Mourafetis2
1Corporate Functions, Procter & Gamble, Cincinnati, OH 45224; 2Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716
Speaker / Presenter
Lynch, Matthew
Text of Abstract
Structured fluids are used in a variety of applications including freshening sprays, detergents, cosmetics, and medicine. In particular, yield stress fluids allow the suspension of materials such as encapsulated particles, emulsions, or hydrocolloids, but flow under applied stress to allow delivery by methods such as spraying, injecting, or topical application. Critically, after the dispensing of the materials, the thixotropic properties of the fluids allow subsequent recovery of the structure. Design such systems requires understanding of the history of the applied strain, extensional properties, and flow-induced alteration in these fluids. These properties are investigated in microfluidic devices that contain expansion and contraction elements for three different types for fluids: xanthan-konjac gum as a yield stress and shear-thinning fluid, polyethylene oxide (PEO) as a Boger fluid, and a Newtonian fluid. The flow behavior of these fluids is understood combined with bulk rheology measurements.