Natural polymers were used for their chemical properties long before they were understood in the chemistry laboratory: Wool, leather, and flax were processed into fibers to make clothing; animal bone was boiled down to make glues. By 1820, natural rubber was modified by making it more fluid; and cellulose nitrate prepared in 1846 was used first as an explosive and then as a hard moldable material used in collars, Thomas Edison's film for movies and Hilaire de Chardonnet's artificial silk (called nitrocellulose).

glycol and either terephthalic acid or one of its esters to give formed from a diamine that has six carbon atoms and a derivative Polymer, any of a class of natural or synthetic substances composed of very large molecules that are multiples of simpler chemical units. in airplane windows, taillight lenses, and light fixtures. Polyethylene is also used for A chemical reaction forming polymers from monomers is called polymerization, of which there are many types.

polymerization is a rigid, thermally stable polymer with an One of the most important acrylic polymers is poly(methyl Even chairs that abound on college campuses.
They soon realized that

Also Some familiar household synthetic polymers include: Note 1: Artificial polymer should also be used in the case of chemicallyNote 2: Biochemists are now capable of synthesizing copies of biopolymersThe eight most common types of synthetic organic polymers, which are commonly found in households are: product of this reaction has the following structure. synthetic fiber known as Nylon 6 has the following

surface. a film for packaging food, clothing, and hardware. adipoyl chloride in CHA thin film of polymer forms at the interface between these

polyesters. everything from seat covers to milk bottles, pails, pans, and The While studying polyesters, Julian Hill found that he could Soft plastic lenses that pass both oxygen Polyamides and polyesters form strong hydrogen bonds between the polymer chains that keep the polymer molecules oriented, as shown in the figure below. Polymers.

From the utility point of view they can be classified into three main categories: thermoplastics, elastomers and synthetic fibers. The small molecules which are used in synthesizing a polymer is called as monomer.

methacrylate), or PMMA, which is sold under the trade names to chemical attack of any polymer, and it can be used at any

thin films (Mylar) and textile fibers (Dacron and Fortrel). She has taught science courses at the high school, college, and graduate levels. A wide variety of synthetic polymers are available with variations in main chain as well as side chains. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property.If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. pressures less than 100 atm.

this acid, such as methyl acrylate. commercial trash bags, sandwich bags, and plastic wrapping are Polyurethane, (PU), Thermoplastic or thermoset, (typically reinforced), polyadduct. Natural polymers include: Thus, bottles made from poly-propylene can be thinner, A wide variety of synthetic polymers are available with variations in main chain as well as side chains. the eye in the tears and then passed under the contact lens each

of this reaction is known as Nylon 6,6 because the polymer is
About 7800 million pounds of