Polymerization is a chemical process in which monomers are joined together to form a polymer. Condensation, cross-linking, and vulcanization are processes that modify the structure or properties of existing polymers.

Crystallinity refers to the degree of order in the arrangement of polymer chains in a material. Amorphous polymers have disordered chain arrangements, while crystalline polymers have ordered chain arrangements.

Elongation at break is a measure of the polymer's ability to stretch before breaking. It is an important property for elastomers and other flexible materials.

Processing is the process of converting a polymer into a useful product. It involves various techniques such as molding, extrusion, and thermoforming.

Polyethylene is a thermoplastic polymer, meaning it can be repeatedly softened by heating and hardened by cooling.

Elastomers are commonly used in the production of tires, seals, and other flexible components due to their elasticity and resistance to deformation.

Polyethylene terephthalate (PET) is commonly used in the production of food packaging materials due to its transparency, barrier properties, and recyclability.

Glass transition temperature (Tg) is the temperature at which a polymer transitions from a glassy state to a rubbery state.

Vulcanization is a process of cross-linking rubber using sulfur or other cross-linking agents to improve its strength and elasticity.

Plasticizers are added to polymers to enhance flexibility and workability by reducing intermolecular forces between polymer chains.

Polyvinyl chloride (PVC) is commonly used in the production of electrical insulation due to its excellent electrical properties and resistance to moisture.

Thermoset polymers are often used in structural components due to their high strength, rigidity, and resistance to heat and chemicals.

Extrusion is a common method for fabricating polymer films by forcing molten polymer through a die to create a continuous sheet.

Depolymerization is the process of breaking down polymers into smaller molecules, typically through chemical or thermal means.

Polyurethane is commonly used in the production of medical devices due to its biocompatibility, flexibility, and resistance to wear and tear.