Polymers are an important discovery that changed the way people live. It goes deep inside every aspect in out practical life. They made up our body. Every material we use is composed of polymers. The cloths we wear consist of polymers. The cars we drive are clusters of polymers. They are considered as the miracle material of the industrial era.
A variety of other natural polymers exist, such as cellulose, which is the main constituent of wood and paper. The list of synthetic polymers includes synthetic rubber, Bakelite, neoprene, nylon, PVC, polystyrene, polyethylene, polypropylene.
Different polymers have diverse properties. They vary in strength, flexibility, toughness, etc. polymer’s properties determine their function we can’t replace the glass by rubber. Each of which has specific properties that decide their industrial use.
However, the properties of polymers can be altered by different factors and techniques. These factors might be either chemical or physical.
Light Spot on History of Polymer
Prior to the early 1920’s chemists doubted the existence of molecules weights greater than a few thousand this with experience in studying nstural compounds such as rubber and cellulose. Stadinger proposed they were made up of macromolecules for rubber, based on a repeating isoprene unit (referred to as a monomer). For this contributions to chemistry, staudinger received the polymerization the repeating unit of the polymer polypropylene Polymerization is the process of combining many small molecules known as monomers into a covalently bonded chain Polymer nomenclature is generally based upon the type of monomer.
Polymers
Polymers are macromolecules that are built up from very large numbers of small molecules known as monomers. Monomers, consequently, are single molecular entities that may combine with others to form more complex structure. Unmatched in the diversity of their properties polymers are used in nearly every industry. Polymers can be produced with wide range of stiffness, strength, heat resistance, density, and even price. With continued research into the science and application of polymers, they are playing an ever increasing role in society.
Types of Polymers
- Natural Polymers :
Centuries ago, nature was using natural polymers to make life possible. Natural polymer is a polymer resulting from raw materials found in nature.
- Synthetic Polymers :
Synthetic polymers are man-made molecules. Synthetic polymers are often referred to as “plastics”, such as the well-known polyethylene and nylon.
Examples:
- PVC
- Polyethylene
- Nylon
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