Abstract
Biocorrosion has been considered as big trouble in many industries and marine environments due to causing great economic loss. The main disadvantages of present approaches to prevent corrosion include being limited by environmental factors, being expensive, inapplicable to field, and sometimes inefficient. Studies show that polymer coatings with anti-corrosion and anti-microbial properties have been widely accepted as a novel and effective approach to preventbiocorrosion. The main purpose of this review is to summarize up the progressive status of polymer coatings used for combating microbially-induced corrosion. Polymers used to synthesize protective coatings are generally divided into three categories: i) traditional polymers incorporated with biocides, ii) antibacterial polymers containing quaternary ammonium compounds, and iii) conductive polymers. The strategies to synthesize polymer coatings resort mainly to grafting anti-bacterial polymers from the metal substrate surface using novel surface-functionalization approaches, such as free radical polymerization, chemically oxidative polymerization and surface-initiated atom transfer radical polymerization, as opposed to the traditional approaches of dip coating or spin coating.
Highlights
The activities of microbial organisms have led to the acceleration in corrosion rate of metals, such as the stimulation of microorganisms to cathodic or anodic reactions or the establishment of differential oxygen concentration cells in localized electrolytic environment by microorganisms, is generally defined as biocorrosion, or microbially-induced corrosion (MIC) (Hamilton, 1985; Videla, 1996; Beech and Sunner, 2004)
The mitigation of biocorrosion is mainly based on preventing or minimizing the bacterial adhesion and the development of biofilms, since the formation of biofilms on substrate surfaces has been extensively considered as the primary step in initiating biocorrosion
Due to their susceptibility to microbial degradation, antibacterial agents are frequently incorporated into the polymer matrix to endow the polymer coatings with biocidal functionality for avoiding the bacterial adhesion and biofilm formation
Summary
The main disadvantages of present approaches to prevent corrosion include being limited by environmental factors, being expensive, inapplicable to field, and sometimes inefficient. Studies show that polymer coatings with anticorrosion and antimicrobial properties have been widely accepted as a novel and effective approach to prevent biocorrosion. The main purpose of this review is to summarize up the progressive status of polymer coatings used for combating microbial corrosion. Polymers used to synthesize protective coatings are generally divided into three categories: (i) traditional polymers incorporated with biocides, (ii) antibacterial polymers containing quaternary ammonium compounds, and (iii) conductive polymers. The strategies to synthesize polymer coatings resort mainly to grafting antibacterial polymers from the metal substrate surface using novel surface-functionalization approaches, such as free radical polymerization, chemically oxidative polymerization, and surface-initiated atom transfer radical polymerization, as opposed to the traditional approaches of dip coating or spin coating
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