Paper Number
GR5 

Session
Gallery of Rheology Contest

Title
Painting fireworks

Presentation Date and Time
October 12, 2022 (Wednesday) 6:30

Track / Room
Gallery of Rheology / Sheraton 1

Authors (Click on name to view author profile)

1. Roffin, Maria C. (Lehigh University, Chemical and Biomolecular Engineering)
2. Wirth, Christopher L. (Case Western Reserve University, Chemical and Biomolecular Engineering)
3. Barancyk, Steven V. (PPG Industries)
4. Rock, Reza (PPG Industries)
5. Gilchrist, James F. (Lehigh University, Chemical and Biomolecular Engineering)

Author and Affiliation Lines (in printed abstract book)
Maria C. Roffin¹, Christopher L. Wirth², Steven V. Barancyk³, Reza Rock³ and James F. Gilchrist^1
1Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA 18015; ²Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH 44106; ³PPG Industries, Pittsburgh, PA 15272

Speaker / Presenter 
Roffin, Maria C.

Keywords
experimental methods; colloids; flow-induced instabilities; microscopy

Text of Abstract
Thin films of paint, such as those used in automotive coatings, dry fast, leading to higher potential for fluid instabilities which results in defects in the final coating. We study Marangoni instabilities that create interesting recirculation patterns, leaving a mottled appearance in the final paint, but while studied through microrheology we obtain firework-like images.