Abstract
Alginate is an anionic and hydrophilic polysaccharide. It is one of the most important biosynthesized natural materials and is derived primarily from two sources: marine plants and bacteria. Some physical and chemical properties of alginates are highlighted in this chapter. Alginates have gained application as metals corrosion inhibitor because of the presence of hydroxyl (−OH) and carboxyl (−COOH) groups in their structure and the large number of lone pair electrons in each of these groups. The inhibition performance of alginates for different substrates and media and the mechanism of inhibition are discussed in this chapter. The various modification strategies of alginates to enhance inhibition performance are also discussed.
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