Question #1d079
1 Answer
The monomers in a polymer do not have to be all the same.
Copolymers are polymers that consist of more than one repeating unit.
Many commercial plastics and rubbers are known as copolymers or heteropolymers.
Saran is a common packaging film. It is a copolymer of vinyl chloride, CH₂=CHCl, and vinylidene chloride, CH₂=CCl₂.
SAN, styrene acrylonitrile resin, is a common plastic for food containers. The monomers are styrene, C₆H₅CH=CH₂, and acrylonitrile, CH₂=CH-CN.
SBR, styrene butadiene rubber, is a component of tires. The monomers are styrene and butadiene, CH₂=CH-CH=CH₂.
Many hoses consist of nitrile rubber. The monomers are acrylonitrile and butadiene.
Inner tubes consist of butyl rubber. The monomers are isobutylene, CH₂=C(CH₃)₂, and butadiene.
Viton gaskets are copolymers of perfluoropropylene, F₂C=CF-CF₃, and vinyl fluoride, CH₂=CHF.
Many high-impact containers, pipes, and gaskets consist of ABS rubber. It is a terpolymer of acrylonitrile, butadiene, and styrene.
