Rheological characterization of spatially-confined thermoplastic polymers using an optofluidic technique
Luisa Guadalupe Cencha
Max Planck Institute for Polymer Research in Mainz
The goal of this project is to continue the development of an optofluidic technique to characterize the rheology of spatially-confined thermoplastics. It is based on sensing changes in optical properties of a porous thin film due to the capillary filling of a liquid into the pores. The rheological information can be obtained as a function of temperature from the time evolution of the optical thickness of the film. The importance of this project resides in the simplicity of the experimental set-up. Moreover it enables one to estimate the viscosity in conditions of nano-confinement, which cannot be done using standard rheometers.