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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
How are polymers classified on the basis of polymerisation process?
Answer the following.
Write the names of classes of polymers formed according to intermolecular forces and describe briefly their structural characteristics.
Answer the following.
Classify the following polymers as natural and synthetic polymers
- Cellulose
- Polystyrene
- Terylene
- Starch
- Protein
- Silicones
- Orlon (Polyacrylonitrle)
- Phenol-formedehyde 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.
Semisynthetic polymer among the following is ______________
Write the number of carbon atoms present in the monomer used for preparation of nylon 6 polymer.
Define elastomer.
Explain thermoplastic and thermosetting polymers.
Explain the classification of polymers on the basis of origin.
Define fibres.
Which of the following properties is of the thermosetting polymers?
Identify the monomers used in the preparation of glyptal.
What type of inter molecular force is present between magnesium chloride and water?
Cuprammonium rayon and viscose rayon are ____________ polymers.
Which of the following properties is of thermoplastic polymer?
The polymer used in making handles of cookers and frying pans is ______.
The polymer used in making synthetic hair wigs is made up of ______.
Which among the following is branched polymer?
A synthetic polymer which is an ester is ______.
Write the structure of monomer used in the preparation of
Define homopolymer.
How are polymers classified into different categories on the basis of intermolecular forces? Give an example of a polymer of each of these categories.
Write names of two natural polymers.
Which from following is a thermoplastic polymer?
Identify thermoplastic polymer from following.
Which of the following polymers is formed due to the co-polymerisation of 1, 3-butadiene and phenylethene?
