What is the monomer of poly chloroethene?
The monomer (bp 259 K) is polymerized in aqueous dispersion at 325-350 K. Pressure (13 atm) is used to keep the monomer in a liquid phase. For polymerization to be controlled, an initiator is needed. In suspension polymerization an initiator, an organic peroxide is used, which is soluble in chloroethene.
What is the structure of poly chloroethene?
Poly(chloroethene) is commonly known by the initials of its old name, PVC. Poly(chloroethene) is made by polymerising chloroethene, CH2=CHCl. Working out its structure is no different from working out the structure of poly(propene) (see above)….
| Temperature: | about 200°C |
|---|---|
| Initiator: | a small amount of oxygen as an impurity |
What is the monomer of polystyrene?
monomer styrene
Polystyrene (PS) is a polymer made from the monomer styrene, a liquid hydrocarbon that is commercially manufactured from petroleum.
What is the formula for the monomer of polyethylene?
Some Common Addition Polymers
| Name(s) | Formula | Monomer |
|---|---|---|
| Polyethylene low density (LDPE) | –(CH2-CH2)n– | ethylene CH2=CH2 |
| Polyethylene high density (HDPE) | –(CH2-CH2)n– | ethylene CH2=CH2 |
| Polypropylene (PP) different grades | –[CH2-CH(CH3)]n– | propylene CH2=CHCH3 |
| Poly(vinyl chloride) (PVC) | –(CH2-CHCl)n– | vinyl chloride CH2=CHCl |
Is chloroethene a monomer?
Vinyl chloride is an organochloride with the formula H2C=CHCl that is also called vinyl chloride monomer (VCM) or chloroethene….Vinyl chloride.
| Names | |
|---|---|
| Preferred IUPAC name Chloroethene | |
| Other names Vinyl chloride monomer VCM Chloroethylene Refrigerant-1140 | |
| Identifiers | |
| CAS Number | 75-01-4 |
What polymer is poly chloroethene?
Modelling addition polymerisation The polymer, poly(chloroethene) is also known as poly(vinyl chloride), or PVC. The diagram shows the structure of propene. Deduce the structure of poly(propene), and use this to show an equation for the polymerisation of propene.
What is the equation for the formation of poly chloroethene?
The old name for poly(chloroethene) was polyvinyl chloride, hence the use of the commercial name PVC, and is made from polymerising the monomer chloroethene, CH2=CHCl, (old name vinyl chloride).
What are the properties of poly chloroethene?
Uses of polymers
| Polymer | Properties | Uses |
|---|---|---|
| Poly(chloroethene) ‘PVC’ | Tough, electrical insulator, can be made hard or flexible | Insulation for electrical wires, windows, gutters, pipes |
| Poly(tetrafluoroethene) ‘PFTE’ | Slippery, chemically unreactive | Non-stick coatings for pans, containers for laboratory substances |
What are the monomers of polyethylene and polystyrene?
Polystyrene chains are made from many styrene molecules. (So, the monomer is styrene.)
Which of the following is monomer unit of Poly Styrene?
Polystyrene (PS) /ˌpɒliˈstaɪriːn/ is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene.
What is the chemical formula of polythene?
(C₂H₄)ₙ
Polyethylene/Formula
As of 2017, over 100 million tonnes of polyethylene resins are being produced annually, accounting for 34% of the total plastics market. Many kinds of polyethylene are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene, with various values of n.
What is made of polyethylene plastic?
Polyethylene is a member of the important family of polyolefin resins. It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and automobile fuel tanks.
What kind of polymer is poly chloroethene made of?
Modelling addition polymerisation The polymer, poly(chloroethene) is also known as poly(vinyl chloride), or PVC. The diagram shows the structure of propene.
Which is repeating unit in poly ( chloroethene )?
The repeating unit shown in brackets for poly(chloroethene) is -(CH 2-CHCl)-The molecular structure of PVC poly(chloroethene) Above is a ‘picture’ of a section of a very long chain poly(chloroethene) polymer molecule (PVC), essentially consisting of hundreds or thousands of -CH 2-CHCl-chloroethene units all joined together.
How is pressure used in the polymerization of chloroethene?
The monomer (bp 259 K) is polymerized in aqueous dispersion at 325-350 K. Pressure (13 atm) is used to keep the monomer in a liquid phase. For polymerization to be controlled, an initiator is needed. In suspension polymerization an initiator, an organic peroxide is used, which is soluble in chloroethene.
How are monomers determine the properties of a polymer?
The monomers a polymer is made from determine the type and strength of intermolecular bonds between the polymer chains, hence they determine the physical properties of the polymer e.g. strength – rigidity, softening – melting point. The equation for the formation of the polymer poly (ethene) from the monomer ethene is shown below.