This book provides a basic introduction to the application of conductive polymer in corrosion protection, especially for marine environment corrosion protection research.
Conventional anticorrosive coatings which are based on heavy metals such as chromium, zinc and copper are toxic to the environment. There has been a need to find suitable replacement coatings that are environmentally friendly as well as effective in inhibiting corrosion of steel. Conductive polymers have garnered much attention recent years due to their environmentally benign nature and high effectiveness in protecting against corrosion. This book introduces the history of these conductive polymers. The applications of conducting polymers, polymer composites and nanocomposites for corrosion protection of different industrial metal substrates are explored based on reported experimental data and their mechanism of inhibition explained. This book also includes overviews of some recent works on marine antifouling, marine heavy-protective coatings, waterborne paints by conducting polymer and inorganic composites.
Conducting polymers and its family of stimuli-actuated polymers exhibit excellent application prospects in the field of anticorrosion, antibacterial, anti-biofouling, and waterborne based coatings. This book will be of great interest to students, scholars, and professionals alike in the field of Corrosion Engineering and Material Science.
Author(s): Yanhua Lei
Publisher: CRC Press
Year: 2023
Language: English
Pages: 208
City: Cambridge
Cover
Half Title
Title Page
Copyright Page
Contents
Preface
Acknowledgments
List of Abbreviations
Contributors
Chapter 1. A General Introduction of Conducting Polymers in Corrosion Protection
1.1 Background of Corrosion
1.2 Introduction to Intrinsically Conducting Polymers
1.2.1 Discovery of Intrinsically Conducting Polymers
1.3 Introduction to Several CPs
1.3.1 Polyaniline (PANI)
1.3.2 Polypyrrole
1.3.3 Polythiophene
1.4 Application of Intrinsically Conducting Polymer
1.5 Conductivity Mechanism of ICPs
1.6 Synthesis of Intrinsically Conducting Polymers
1.7 Application of ICP in Corrosion Protection
1.7.1 CP-Blended Paint/Resin
1.7.2 CP Electropolymerized/Electrodeposited Coating
1.7.3 CP-Based Inhibitors
1.7.4 CP-Related Corrosion Mechanisms
1.7.4.1 Ennobling Mechanism
1.7.4.2 Physical Barrier Mechanism
1.7.4.3 Ionic Perm-Selectivity Mechanism
1.7.4.4 Controlled Inhibitor Release Mechanism
1.7.4.5 Self-Healing Mechanism
1.7.5 Nanoparticiple-Encapsulated CPs
1.8 Summary
References
Chapter 2. Corrosion Protection of Carbon Steel by Conducting Polypyrroles
2.1 Introduction
2.2 Oxidative Polymerization of Polypyrrole
2.3 Oxidation and Reduction of Polypyrrole and its Conducting Properties
2.4 Protection Mechanisms of Conducting Polymers
2.5 Design of PPy Coating for Corrosion Protection
2.5.1 Role of Doping Anions and Solid Powders
2.5.2 Ionic Permselectivity of the Polypyrrole Layer
2.6 Evaluation of Corrosion Rate of Steel Covered by Polypyrroles
2.7 Performance of Corrosion Protection of Carbon Steel by Bilayered Polypyrrole
2.8 Summary
References
Chapter 3. Inhibition of Copper Corrosion Using Conducting Polypyrrole Coatings
3.1 Corrosion of Copper and Copper Alloys
3.2 A General Introduction of Conducting Polymer Coatings in Copper Corrosion Protection
3.3 Synthesis of Protection Conducting PPy Coatings From Phytic Acid Solution
3.3.1 EQCM Study of PPy Deposition
3.3.2 In-Situ Raman Spectroscopy Study of the PPy Formation
3.3.3 Ex-Situ SEM Observation of the PPy Formation
3.4 Effect of Ph of Phytic Acid Solution on the PPy Formation
3.5 Evaluation of Corrosion Rate and Protective Efficiency
3.5.1 Open Circuit Potential
3.5.2 Amount of Cu Ions Dissolved During Immersion
3.5.3 Cation Perm-Selectivity of PPy Layer
3.5.4 PPy-Phytate Protection Mechanism
3.6 Effects of Inhibitors on the PPy Deposition and its Protection Properties
3.6.1 BTA Adsorption on Copper (BTA-ad-Cu) in an Oxalic Acid Solution During PPy Electrodeposition
3.6.2 Effect of the BTA Adsorption on PPy Formation
3.7 Summary
References
Chapter 4. Corrosion Protection of Magnesium (Mg) Alloys by Conducting Polymers
4.1 Introduction
4.2 Corrosion Behavior of Mg Alloys
4.3 Corrosion Protection of Conducting Polymers in Our Work
4.4 The PPy Films for Corrosion Protection of a Zinc-Coated AZ91D Alloy
4.4.1 The Preparation of the Conducting Polypyrrole Layer
4.4.2 The Effect of the Current Density and Molybdate Addition
4.4.3 The Effect of Ultrasonic Irradiation and Formation of PPy-Tart-MoO4/ PPy-DS Bi-Layer
4.5 The Mechanism of PPy Film Growth on a Zinc-Coated AZ91D Alloy During Galvanostatic Electropolymerization
4.6 The Corrosion Performance of the Kinds of PPy Layers
4.7 Summary
References
Chapter 5. Applications of Conducting Polymers for Anti-Corrosion in Marine Environments
5.1 Introduction to Marine Corrosion
5.1.1 Environmental Characteristics of Seawater
5.1.2 Corrosion and Protection Mechanisms
5.2 Anti-Corrosion Based on Conducting Polymer (CP) Coatings
5.3 Pure CP Coatings
5.4 CPs Composite Blended Resin Coatings
5.5 CP/Nanoparticle Composite-Reinforced Coatings
5.5.1 PANI/Nanoparticle-Reinforced Coatings
5.5.1.1 TiO2 Nanoparticles
5.5.1.2 ZnO Nanoparticles
5.5.1.3 SiO2 Nanoparticles
5.5.1.4 CeO2 Nanoparticles
5.5.1.5 Fe2O3 Nanoparticles
5.5.1.6 Other Nanoparticles
5.5.2 PPy/Nanoparticle-Reinforced Coatings
5.6 Anti-Corrosion Mechanism of CP Coatings
5.6.1 Anode Protection Mechanism
5.6.2 Physical Barrier Mechanism
5.6.3 Dopant Release Mechanism
5.6.4 Electric Field Shielding Mechanism
5.6.5 Hybrid Synergistic Mechanism
5.7 Several Applications of PANI Coatings
5.7.1 Anti-Corrosion for Oil Storage Tanks and Pipelines
5.7.2 Zinc-Rich Epoxy Primer
5.7.3 Marine Anti-Biofouling Coatings
5.7.4 Waterborne Anti-Corrosive Coatings
5.7.5 Proton Membrane Fuel Cell Bipolar Plate
5.8 Summary and Outlooks
References
Chapter 6. An Introduction of Conducting Polymers in Anti-Bacterial and Anti-Biofouling Applications
6.1 Introduction to Microbially Influenced Corrosion and Marine Biofouling
6.2 How Does Marine Life Attach to the Surface of Materials?
6.3 Comparison Between MIC and Marine Biofouling
6.4 Introduction to Anti-Fouling Coatings and Anti-Bacterial Coatings
6.4.1 Introduction to Anti-Fouling Coatings
6.4.2 Introduction to Anti-Bacterial Coatings
6.5 Anti-Biofouling or Anti-Bacterial Performance of Conducting Polymers
6.5.1 Anti-Bacterial Properties of PANI
6.5.2 Anti-Fouling Properties of PANI-Contained Coatings
6.5.3 Anti-Fouling Properties of the PANI+NPs Contained Coatings
6.5.4 Anti-Fouling of Polyaniline-Based Coatings with Hydrophilic Modification
6.5.5 Cathodic Anti-Biofouling Properties of Conducting Polymers
6.5.6 Photocathodic Anti-Fouling Properties of CPs
6.6 Summary and Outlooks
References
