Some Important Polymers — Definition
Definition
Imagine building a very long chain using many identical small beads. In chemistry, these 'beads' are called monomers, and the 'long chain' they form is called a polymer. The process of linking these small monomer units together to form a large polymer molecule is known as polymerization.
When we talk about 'Some Important Polymers,' we're focusing on specific types of these long chains that have become incredibly useful in our daily lives and in various industries. Think about the plastic bottles you drink from, the clothes you wear, the tires on a car, or even the non-stick coating on your frying pan – all of these are made from different types of important polymers.
These important polymers can be broadly categorized based on their origin (natural or synthetic), the type of reaction used to make them (addition or condensation polymerization), and their properties (like thermoplastics, thermosetting plastics, elastomers, or fibers).
For instance, polythene, which is used to make plastic bags and bottles, is an addition polymer made from ethene monomers. Nylon, a strong synthetic fiber used in clothing and ropes, is a condensation polymer formed from diamines and dicarboxylic acids.
Rubber, whether natural or synthetic, is an elastomer known for its elasticity, used in tires and seals.
The 'importance' of these polymers stems from their diverse properties. Some are strong and rigid, others are flexible and elastic, some are transparent, while others are opaque. Their chemical inertness, electrical insulation properties, and resistance to corrosion also contribute to their utility.
Understanding these important polymers involves knowing their basic monomer units, the type of polymerization reaction they undergo, their characteristic properties, and their primary applications. This knowledge is not just academic; it helps us appreciate the materials that shape our modern world and is frequently tested in exams like NEET UG, often requiring recall of specific examples, structures, and uses.