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Question
What are silicones? State the uses of silicones.
Solution
Organosilicon polymers having (R2SiO2) as monomer units are called silicones. Silicones contain organic side groups which surround it giving alkane like nature and makes it hydrophobic. Silicones are applicative in electrical insulators, waterproofing, sealant. They have been utilized in the biological field in cosmetic implants and other surgeries.
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RELATED QUESTIONS
Silicon has a strong tendency to form polymers like silicones. The chain length of silicone polymer can be controlled by adding ______.
Me3SiCl is used during polymerisation of organo silicones because:
(i) the chain length of organo silicone polymers can be controlled by adding Me3SiCl.
(ii) Me3SiCl blocks the end terminal of silicone polymer.
(iii) Me3SiCl improves the quality and yield of the polymer.
(iv) Me3SiCl acts as a catalyst during polymerisation.
Assertion (A): Silicons are water repelling in nature.
Reason (R): Silicons are organosilicon polymers, which have (–R2SiO–) as repeating unit.
Which of the following compounds is used in cosmetic surgery?
In silicones, silicon is strongly linked to
Among the following substituted silanes, which one will give rise to cross linked silicone polymer on hydrolysis?
