Polymers

Twenty-first century is called the time of products from polymers. Polymers are inorganic or organic, amorphous and crystalline substances consisting of "monomeric units" connected in long macromolecules by chemical bonds. The polymers consist of a large number of repeating units of the same structure, for example, polyvinyl chloride, natural rubber, and others. It should be noted that in engineering the polymers are often used as components of composite materials such as fiberglass. Are possible composite materials all components of which are polymers with different composition and properties.

Twenty-first century is called the time of products from polymers

Natural organic polymers are formed in the plant and animal organisms. The most important of them are polysaccharides, proteins and nucleic acids, which largely consist of plant and animal body, and which provide very functioning of life on earth. It is believed that a decisive stage in the emergence of life on Earth was the formation from of simple organic molecules more complex - high molecular weight.

Humanity has long used natural polymer materials in lives. This leather, fur, wool, silk, cotton, and so on., which used for the manufacture of clothing, various binders (cement, lime, clay), which form at the appropriate processing three-dimensional polymer body. It should be noted that the development of cinema and photography has been possible only because of the appearance of a transparent film of nitrocellulose.

Production of synthetic polymers started in 1906, when Leo Bakeland patented the so-called bakelite resin - a product of phenol and formaldehyde condensation. For decades, from the polymer Bakelite resin produced boxes electrical appliances, batteries, television sets, sockets.

But there is a problem: what to do with used products from polymers? Japanese chemists have developed a method for processing waste polymers for gasoline. To form gasoline in the products from the polymers - packaging tube, film, powdered nickel is added and the resulting mixture was heated at 500 degrees Celsius. Thus there is a long-chain cleavage of polymers into pieces with a small amount of carbon atoms. The result is a mixture of gaseous hydrocarbons and gasoline.

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