Name the 4 types of synthetic polymers?
Answers
Answer:
Synthetic polymers are human-made polymers. They can be classified into four main categories: thermoplastics, thermosets, elastomers, and synthetic fibers. They are commonly found in a variety of consumer products.
Explanation:
Low Density Polyethylene
Low Density Polyethylene (LDPE) polymers are among the most common types of synthetic organic polymers, which are often found in households. LDPE is a thermoplastic made from the monomer ethylene. One of the first polymers to be created, it was produced in 1933 by Imperial Chemical Industries using a high pressure process via free radical polymerization. It is manufactured the way method today. LDPE is commonly recycled, with the number 4 as its recycling symbol. Despite competition from more modern polymers, LDPE continues to be an important plastic grade.
High Density Polyethylene
High Density Polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum. It takes 1.75 kilograms of petroleum (in terms of energy and raw materials) to make one kilogram of HDPE. HDPE is commonly recycled, with the number 2 as its recycling symbol.
Polypropylene
Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications, including packaging and labeling, textiles, stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes. An additional polymer made from the monomer propylene, it is rugged and unusually resistant to many chemical solvents, bases, and acids.
Polyvinyl Chloride
Polyvinyl Chloride (PVC) is the third-most widely produced plastic, after polyethylene and polypropylene. PVC is used in construction because it is cheaper and stronger than more traditional alternatives such as copper or ductile iron. It can be made softer and more flexible by adding plasticizers, the most popular of which are phthalates. In this form, PVC is used in clothing and upholstery, electrical cable insulation, inflatable products, and many applications in which it replaces rubber.