Abstract
Polymers are available in three forms: one is natural polymers and others are semi-synthetic and synthetic polymers. The synthetic polymers are obtained mainly from petroleum oil and made by human being. They are mainly synthesized by addition polymerization and condensation polymerization and are utilized in various commercial fields and also, in pharmaceutical applications. Natural polymers are extracted/derived from different natural resources, such as plants, algae, animals, microbes, etc. Semi-synthetic polymers are obtained by slight modification of various natural polymers. The natural polymers possess some important advantages over the synthetic polymers in pharmaceutical as well as biomedical applications. These advantages are biodegradability, biocompatibility, and favorable biological performances, water solubility, emulsifying property, gelling and binding properties, etc. Due to their common existence in the tissues of living organisms, they are readily available, economical, and non-toxic. The main aim of current chapter is to highlight the pharmaceutical uses of various natural polymers.
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