Oxygen as a Mass Transport Probe in Polymer Films (Chronocoulometry, Hydrodynamic)

Techniques for exploration of physical properties of a representative electrocatalysis model (ferricyanide coulombically bound into protonated poly(vinylpyridine)) through diffusion of a mass transport probe (molecular oxygen) have been developed. Detection of oxygen diffusion through several ferricyanide-loaded PVP films on a rotating disk electrode allows evaluation of permeation coefficients. (kD(,S)). A background-subtraction chronocoulometric technique allows the examination of diffusion behavior within such films primarily in a chosen oxidation state. For the system investigated, oxygen diffusion occurs either rapidly or within polymer-enclosed solvent pools and does not reflect viscosity changes in the polymer phase with oxidation state.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Morris, Susan Elaine

• Chemistry, Analytical

Identifier

(UMI)AAI8701571

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70353