Paper Number
IR11 

Session
Interfacial Rheology

Title
Viscoelasticity of a carbon nanotube-laden air-water interface

Presentation Date and Time
October 24, 2019 (Thursday) 9:05

Track / Room
Track 7 / Room 306C

Authors (Click on name to view author profile)

  1. Chang, Shing-Yun (University of Connecticut, Department of Chemical and Biomolecular Engineering)
  2. Vora, Sahil (University of Connecticut)
  3. Young, Charles (University of Connecticut)
  4. Shetty, Abhishek (Anton Paar, Rheology Division)
  5. Ma, Anson (University of Connecticut)

Author and Affiliation Lines (in printed abstract book)
Shing-Yun Chang1, Sahil Vora1, Charles Young1, Abhishek Shetty2, and Anson Ma1
1Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269; 2Rheology Division, Anton Paar, Ashland, VA 14850

Speaker / Presenter 
Chang, Shing-Yun

Text of Abstract
Two different methods have been used to characterize the viscoelasticity of an air-water interface decorated by carbon nanotubes (CNTs). The first method involves applying sinusoidal deformation to the CNT-laden interface by oscillating the barriers of a Langmuir-Pockels (LP) trough laterally and measuring the corresponding surface pressure changes via a Wilhelmy plate. In the second method, the LP trough was modified and then coupled with a torsional rheometer equipped with a bicone test fixture. Surface moduli and viscosities obtained from these methods are compared, revealing the challenges associated with using these measurement methods.