Define plastic and types of plastics

 

Define plastic and types of plastics:

• Plastic is a synthetic material made from polymers that can be molded into various shapes.
• Plastics have many applications, including in packaging, construction, and transportation.
• Plastics can be made from a variety of polymers, including polyethylene, polystyrene, and polyvinyl chloride.
• Plastics can be classified based on their properties, such as thermoplastics and thermosetting plastics.
• Thermoplastics can be melted and reshaped multiple times without losing their properties.
• Examples of thermoplastics include polyethylene, polypropylene, and polystyrene.
• Thermosetting plastics cannot be melted and reshaped once they have been cured.
• Examples of thermosetting plastics include epoxy, phenolic, and melamine.
• Plastics can also be classified based on their properties, such as amorphous and crystalline plastics.
• Amorphous plastics have a disordered molecular structure and are transparent and brittle.
• Examples of amorphous