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Understanding Synthetic Polymers

Monday, January 13, 2014

By Lenna Stockwell


Synthetic polymers are simply man-made polymers. A polymer is a molecule made up of chains containing multiple repeating units. In humans, our DNA and the proteins in our body are naturally occurring polymers. But we can also manufacture synthetic polymers, and there are four main groupings of synthetic polymers.

An example is synthetic fiber, a type of synthetic polymer with many interesting and common properties. Synthetic fibers are resistant to chemicals and also can be highly resistant to moisture and problematic organisms such as insects and fungi. Synthetic fibers also cost quite a bit less than natural fibers, which is why these are used as replacement for silk, which is naturally produced by silkworms. Other types of synthetic fibers are items used for rope and clothing, such as nylon or perhaps Rayon.

Other types are the elastomers, a type of synthetic polymer with high elasticity, as the name suggests. Examples of products made from elastomers are shoe soles and tires, usually flexible products. Other types of elastomers are the silicone rubbers, elastomers often used as sealants.

Thermosets is yet another category of synthetic polymer and this is also known as a thermosetting plastic. This is a type of polymer that is formed into a product or item using heat and once it has dried and set it irreversibly cured. This "cure" is applied during the heating process. Because these thermoplastics cannot be re-melted and formed into new shapes or products, they are not highly recyclable although sometimes they can be shredded or broken down and used to help make other items. One example of a thermosetting plastic is vulcanized rubber which is used to make tires.

Synthetic polymer products that sound similar to the thermosetting plastic products but with some differences are the thermoplastics. These are products that can be melted several times and reused because thermoplastics are products that do not go into a chemical change when heated. These are products that are recyclable but are not usually biodegradable, and these are mostly these thermoplastic products.

Thermoplastics are synthetic polymers used in making thermoplastic packages, and can run into millions each year. These are the custom packaging products made by many thermo forming companies. These are the water bottles and milk jugs and also the food containers used as food storage, made from thermoplastics. Aside from these custom made packages produced by the thermoforming companies, other products are made from this plastic type. One common type of thermoplastic is polyvinyl chloride, which is known simply as PVC and used to make many products, especially pipes.




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