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प्रश्न
Explain the classification of polymers on the basis of origin.
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उत्तर
On the basis of the source or origin, polymers are classified into three categories:
- Natural polymers: The polymers obtained from natural source are said to be natural polymers.
e.g. cotton and linen.
Natural polymers are further subdivided into two types: Plant polymer and animal polymers. - Synthetic polymers: These polymers are artificially prepared by polymerization of one monomer or copolymerization of two or more monomers.
e.g. nylon and terylene.
Synthetic polymers are further divided into three subtypes: fibres, synthetic rubbers, and plastics. - Semisynthetic polymers: Polymers which are derived from natural polymers are called semisynthetic polymers. These are also called regenerated fibres.
e.g. cellulose acetate rayon and cellulose nitrate.
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संबंधित प्रश्न
Draw the flow chart diagram to show the classification of polymers based on the type of polymerization.
Answer the following in one sentence.
Define the term: Synthetic fibres
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
How is polythene manufactured? Give their properties and uses.
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.
\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]
Semisynthetic polymer among the following is ______________
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Define elastomer.
Explain thermoplastic and thermosetting polymers.
Explain homopolymers with examples.
Explain the classification of polymers on the basis of structures.
Mention two properties and two uses of nylon 6, 6 polymers.
Define fibres.
Which of the following properties is of the thermosetting polymers?
Which of the following statement is INCORRECT?
The monomers used in the preparation of dextron are ______.
∈-Caprolactum has ____________ carbon atoms in its ring.
Which of the following is INCORRECT regarding terylene?
Identify the natural polymer from the following.
Which among the following polymers is a copolymer?
Identify thermoplastic polymer from the following.
The polymer used in making handles of cookers and frying pans is ______.
Write the structure of isoprene and the polymer obtained from it.
Wool is ______ fibre.
Which one of the following is a linear polymer?
Which from following is a thermoplastic polymer?
The monomers of buna-S rubber are ______.
