Processing Dependent Mechanical Behavior and Molecular Structure of Electrospun Polymeric Nanofibers
Naraghi, Mohammad
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https://hdl.handle.net/2142/85117
Description
Title
Processing Dependent Mechanical Behavior and Molecular Structure of Electrospun Polymeric Nanofibers
Author(s)
Naraghi, Mohammad
Issue Date
2009
Doctoral Committee Chair(s)
Chasiotis, Ioannis
Department of Study
Aerospace Engineering
Discipline
Aerospace Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Nanotechnology
Language
eng
Abstract
Finally, a semi-empirical model was proposed to capture the viscous response of PAN nanofibers. At small viscoelastic deformations, the model is composed of a set of linear springs and dashpots, appropriately assembled to capture the strain rate sensitive elastic modulus and creep behavior of the nanofibers. At large viscoplastic deformations, the model is composed of a Langevin spring and an Eyring's dashpot that capture the strain rate sensitive yield stress and the orientation hardening observed in the experimental stress-strain curves.
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