Paper Number
SM43
Session
Polymers Solutions, Melts and Blends
Title
Macromolecular architecture and complex viscosity
Presentation Date and Time
October 23, 2019 (Wednesday) 5:25
Track / Room
Track 3 / Room 201
Authors
- Kanso, Mona (Queen's University, Chemical Engineering)
- Giacomin, Alan J. (Queen's University, Chemical Engineering)
- Saengow, Chaimongkol (Queen's university, Chemical Engineering)
- Piette, Jourdain H. (Queen's university, Chemical Engineering)
Author and Affiliation Lines
Mona Kanso, Alan J. Giacomin, Chaimongkol Saengow, and Jourdain H. Piette
Chemical Engineering, Queen's University, Kingston, Ontario, Canada
Speaker / Presenter
Giacomin, Alan J.
Text of Abstract
General rigid bead-rod theory [Hassager, J Chem Phys, 60, 4001 (1974)] explains polymer viscoelasticity from macromolecular orientation. By means of general rigid bead-rod theory, we relate the complex viscosity of polymeric liquids to the architecture of axisymmetric macromolecules. In this work, we explore the zero-shear and complex viscosities of 26 different axisymmetric polymer configurations. When non-dimensionalized with the zero-shear viscosity, the complex viscosity depends on the dimensionless frequency and the sole dimensionless architectural parameter, the macromolecular lopsidedness. In this work, in this way, we compare and contrast the elastic and viscous components of the complex viscosities of macromolecular chains that are straight, branched, ringed, or star-branched. We explore the effects of branch position along a straight chain, branched-chain backbone length, branched-chain branch-functionality, branch spacing along a straight chain (including pom-poms), the number of branches along a straight chain, ringed polymer perimeter, branch-functionality in planar stars, and branch dimensionality.