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Natural polymers have been widely used in a variety of biomedical applications such as pharmaceuticals, tissue regeneration scaffolds, drug delivery agents, and imaging agents.Natural polymers can be derived from a wide variety of sources, from plants, animals, and microorganisms. Our body also contains many natural polymers including proteins and nucleic acids. Mostly, natural polymers have been formed from condensation polymers and water is formed as a by-product. Some natural polymers such as DNA and RNA are very essential in the life processes of all living organisms

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Silk is a natural protein largely used in the textile industry but also in biomedicine, catalysis, and other materials applications.

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Examples of synthetic polymers are nylon, epoxy, and polyester.

They possess good strength, desirable flexibility, resistivity, chemical inertness and so forth. With these characteristics, they are perfect for experiments and inventions.

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An example of synthetic polymers are nylon, polyethylene, polyester, epoxy and others. They possess good strength, desirable flexibility, resistivity, chemical inertness and so forth,Desirable Properties is a very important advantage of Synthetic Polymers.

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A semi-synthetic polymer is a polymer made by chemically treating a natural polymer.

Some examples of semi-synthetic polyester include collagen, chitin, chitosan, keratin, silk and elastin, cellulose nitrate, cellulose acetate, and vulcanized rubber. Besides, those derived from plants, such as starch, cellulose, and pectin.

The polymers represent an important component of several pharmaceutical formulations. It is well-known that the formulation and clinical performance of pharmaceutical dosage forms depend on the physicochemical properties of the used polymers. Therefore, the impact of polymers is a consequence of the great advances in chemical synthesis and the analysis of their properties.

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