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प्रश्न
Explain the term copolymers with examples.
What are copolymers?
What are copolymers? Give appropriate example.
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उत्तर १
- The polymers which have two or more types of repeating units are called copolymers.
- They are formed by the polymerisation of two or more different types of monomers in the presence of each other.
- The different monomer units are randomly sequenced in the copolymer.
Example: Buna-S, Buna-N
उत्तर २
- When two or more different types of monomers undergo polymerisation, the process is called copolymerisation, and the polymer thus formed is called a copolymer.
- Each monomer used in the same chain is present in many units that make up the copolymer.
- Its composition is determined by the reactivity of the monomers as well as their proportion.
- Compared to homopolymers made from each of the combining monomers, copolymers have very distinct properties. These polymers include styrene-butadiene rubber, styrene methylmethacrylate, and others.
संबंधित प्रश्न
Answer the following in one sentence.
Name some chain-growth polymers.
Answer the following in one sentence.
Give one example each of copolymer and homopolymer.
Answer the following.
What are synthetic resins? Name some natural and synthetic resins.
Answer the following.
Distinguish between thermosetting and thermoplastic resins. Write example of both the classes.
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]
Answer the following.
Explain in detail free radical mechanism involved during preparation of addition polymer.
Homopolymer among the following is ______.
Functional group present in terylene polymer is ______.
Explain thermoplastic and thermosetting polymers.
Which polymer from following is used as synthetic leather?
Which of the following properties is of the thermosetting polymers?
Which among the following is not a semi-synthetic polymer?
Which of the following is a natural polymer?
The monomers used in the preparation of dextron are ______.
Which of the following pair represents natural polymers?
A polymer which becomes soft on heating and hard on cooling, belongs to class of ______.
Which of the following is INCORRECT regarding terylene?
Identify the natural polymer from the following.
Which among the following polymers is a copolymer?
Which among the following polymers belongs to class thermoplastic polymers?
Identify thermoplastic polymer from the following.
Write classification of polymers on the basis of structure.
The polymer used in making handles of cookers and frying pans is ______.
Define the synthetic polymers.
Define homopolymer.
Which of the following polymers is formed due to the co-polymerisation of 1, 3-butadiene and phenylethene?
