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Investigation Of Polyaniline Emeraldine Salts For The Protection Of Plain Carbon Steel, Anton Josip Dominis

University of Wollongong Thesis Collection 1954-2016

A great deal of work has been undertaken throughout the world over the past 50 years to increase the corrosion resistance of plain carbon steel (PCS) or mild steel (MS), and many successful techniques were developed. For example, chemical inhibitors, modified alloys, barrier coatings, various pretreatment processes and conversion coatings. However, there are drawbacks associated with some of these practices such as acute toxicity and pollution, factors that are now strictly regulated by modern Governments throughout the world. Even though conversion coatings such as chrornate and non-chromate types (phosphates) work well for corrosion protection of certain structural materials they will …

The Use Of Conducting Polymer Sensors For Environmental Monitoring, Roderick L. Shepherd

University of Wollongong Thesis Collection 1954-2016

This thesis details the development of conducting polymer (CP) sensors, and associated devices for monitoring chemical species of environmental significance. A key aspect of this work was the fabrication and testing of novel CP gas sensors, based on inexpensive polymer substrates with screen-printed carbon electrodes. These devices were used in electronic nose systems for the identification and discrimination of organic vapours, and on a small autonomous robot to detect, track and locate the source of ammonia vapour plumes. The possibility of modifying chemically deposited Polypyrrole (PPy) thin films post-polymerisation using solution based anion exchange methods was evaluated, in an attempt …

Separation And Recovery Of Metal Ions Using Conducting Polymers, Jie Ding

University of Wollongong Thesis Collection 1954-2016

Two different approaches for achieving separation and recovery of metal ions from aqueous solutions using conducting polymers have been demonstrated. The first approach is the electroless recovery of metal ions using conducting polymer modified RVC (Reticulated Vitreous Carbon) composite materials, while the second is the electrochemically controlled transport of metal ions across conducting polymer membranes.

For the electroless recovery of gold from aqueous solutions, a range of conducting polymers including polypyrroles, polyanilines and polythiophenes with different reduction potentials were synthesized and characterized. Both conducting polymer modified RVC composite materials and conducting polymer membranes were used. Recovery of gold from acidic, …

Synthesis And Characterisation Of Chiral Substituted Polyanilines, Ekaterina V. Strounina

University of Wollongong Thesis Collection 1954-2016

This thesis describes the synthesis and characterisation of a range of novel, chiral conducting polymers formed from substituted anilines, which may have potential in future applications such as chirality assessment, asymmetric synthesis and chiral separations. Their redox and pH switching and ionochromic properties are also explored. A particular focus is the water-soluble sulfonated polyaniline, poly(2- methoxyaniline-5-sulfonic acid) (PMAS), where two ways of inducing main chain chirality in PMAS have been successfully developed.

In Chapter 3 it is shown that PMAS can be deposited in a highly optically active form via the potentiodynamic polymerisation of the monomer 2-methoxyaniline-5-sulfonic acid (MAS) in …