Advertisements
Advertisements
Questions
Explain the term copolymers with examples.
What are copolymers?
What are copolymers? Give appropriate example.
Advertisements
Solution 1
- 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
Solution 2
- 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.
RELATED QUESTIONS
Answer the following in one sentence.
Give one example each of copolymer and homopolymer.
Answer the following.
Classify the following polymers as natural and synthetic polymers
- Cellulose
- Polystyrene
- Terylene
- Starch
- Protein
- Silicones
- Orlon (Polyacrylonitrle)
- Phenol-formedehyde resins
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
\[\begin{array}{cc}\ce{- (CH2 - CH -)_\text{n}}\\
\phantom{.....}|\\\ce{\phantom{.......}CN}\end{array}\]
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
Semisynthetic polymer among the following is ______________
Homopolymer among the following is ______.
Define elastomer.
Explain thermoplastic and thermosetting polymers.
Which polymer from following is used as synthetic leather?
Which of the following statement is INCORRECT?
Which of the following pair represents natural polymers?
Cuprammonium rayon and viscose rayon are ____________ polymers.
A polymer which becomes soft on heating and hard on cooling, belongs to class of ______.
Identify semisynthetic polymer.
Identify the natural polymer from the following.
Which among the following polymers belongs to the class elastomers?
Write classification of polymers on the basis of structure.
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 ______.
Define the synthetic polymers.
Which one of the following is a linear polymer?
Define homopolymer.
What are homopolymers?
Identify the monomer used to prepare acrylic glass.
Which from following is a thermoplastic polymer?
