Several synthetic rubbers have captured the natural rubber market. Now a days we can use tailorable elastomers for any desired specific purpose. Buna-S rubber is one of the commonly used synthetic rubber.
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| Synthetic scheme of Buna-S Rubber |
Buna-S Rubber:
It is a random co-polymer formed by the emulsion polymerisation of a mixture of 1:3 butadiene and styrene in the presence of peroxide catalyst at 5 degree Celsius and therefore the product is called as cold rubber. The rubber obtained is also called Styrene butadiene rubber (SBR).
In Buna-S, Bu stands for butadiene and, Na for sodium and S for styrene. It is vulcanised with sulfur. The rubber is slightly inferior to natural rubber in its physical properties.
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| Application of Buna-S |
Applications: It finds application due to its high resistance to abrasion.
- It is used for the manufacture of passenger car tyres and treads,motor cycle and scooter tyres,cycle tyres and tubes.
- They are also used for the manufacture of conveyor belts,foot-wares, shoe soles,hoses and electrical insulation.
in place of benzene ring u placed cyclohexane ring
ReplyDeleteWhile a monomer undergoing polymerization the pi bond resonance is not a significant one.It is understood
DeleteIt is. It decides the mechanism the reaction will follow.
Deleteyes
DeleteMononer undergoing polymerization the pi bond resonance is not a significant one.It is understood.
ReplyDeletePlz confirm buna s formula
ReplyDeleteWe are one of the best synthetic rubber provider having propertiesof high Ts and tear, low specific gravity, low abrasion, and excellent resistance to weathering and chemical.
ReplyDeleteHi product of remain what
ReplyDeleteKeep benzen, in place of cyclohexen
ReplyDeleteThe number of atoms present in FCC arrangement-
ReplyDelete