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Chemistry
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Chemistry
Natural Rubber (2)
Chemistry
Question
Natural Rubber (2)
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Elasticity of unvulcanised rubber
a
Elasticity of vulcanised rubber
b
Scientific name of rubber trees
The scientific name Hevea brasiliensis
The history of rubber trees brought to Malaysia
Rubber trees were brought to Malaysia in 1877
Among Malaysia’s major exports
Are rubber gloves, condoms and catheters
Latex (1)
Is a colloid and not a solution
Latex (2)
Latex is a white fluid obtained from rubber trees when the tree bark is tapped
Monomer for polyisoprene
Is isoprene or with the IUPAC name 2-methylbut-1,3-diene
Effect of the protein membrane of rubber particles is negatively charged on the outer surface
This causes rubber particles to repel each other, preventing coagulation
Factors that affect the characteristics of natural rubber (1)
Depend on rubber polymers that are natural elastomeric polymers
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