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Polymer is a term used to describe molecules consisting of structural units and a large number of repeating units connected by covalent chemical bonds. The term is derived from the Greek words: polys meaning many, and meros meaning parts *. The key feature that distinguishes polymers from other molecules is the repetition of many identical, similar, or complementary molecular subunits in these chains. These subunits, the monomers, are small molecules of low to moderate molecular weight, and are linked to each other during a chemical reaction called polymerization.

Instead of being identical, similar monomers can have varying chemical substituents. The differences between monomers can affect properties such as solubility, flexibility, and strength. In proteins, these differences give the polymer the ability to adopt a biologically-active conformation in preference to others. (See self-assembly.) Identical monomers with nonreactive side groups result in a polymer chain that will tend to adopt a random coil conformation, as described by an ideal chain mathematical model. Although most polymers are organic, with carbon-based monomers, there are also inorganic polymers; for example, the silicones, with a backbone of alternating silicon and oxygen atoms and polyphosphazenes.

Polymer nomenclature


Polymers are typically classified according to four main groups:

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Recycling Inc. - Full service recycling facility specializing in the collection and brokerage of paper and plastics.
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Addcolour Plastics Limited - Manufacturers of coloured masterbatches and thermoplastic compounds. Recyclers of commodity and engineering polymers in custom colors.
Meta Description: [ Manufacturers of coloured Masterbatches and thermoplastic compounds. Recyclers of commodity and engineering polymers. Masterbatches in every colour under the sun with a quality, consistency and service you can trust ]

Ag Container Recycling Council (ACRC) - Collects and recycles HDPE crop protection product containers. Thousands of farmers and applicators across the USA participate in their programs.
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American Commodities, Inc. - Compounder, processer, and recycler of engineering thermoplastics and post industrial scrap.
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American Recycling Company - Participating in a closed loop recycling system in which products are recycled back into the original products.

American Trading Company - Recyclers of post consumer and post industrial scrap plastic. Buys and sell a range of plastic resins.

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404 C Young Barrel Recycling - Recycling of used plastic drums and barrels into reusable plastic flake.
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500 C. A. Walker Company - Buys, sells, and recycles post industrial plastics, specializing in flexible polythylene.
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Carolina Plastics, Inc. - Offers both in-house and mobile grinding recycling services.
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Conigliaro Industries - Recycling plastic, paper, metal, glass, wood, and rubber. Provides recycling services to businesses, institutions and municipalities.
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Custom Polymers, Inc - USA. Post-industrial plastics recycling and reprocessing company. Scrap, regrind, reprocessed pellets, virgin prime and off-grade resins and compounds, and color concentrates. English and Spanish.
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Replas Products - Australia: manufacturing products from post industrial and post consumer recycled plastics.
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RJM International Inc. - Specializes in recycling and compounding of post-industrial and post-consumer plastic materials, trimmings and other manufacturing scraps.

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Sonepa Plastics Recycling Industries - Netherlands: recycling post industrial and post consumer plastics, rubber, polymers. Industrial and commercial recycling.
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404 SSK Foundation - Switzerland: promotion of research, development and conversion techniques and equipment for recycling waste plastic into usable polymers.
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