What is the monomer used to make polypropene?

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Study for the IGCSE Organic Chemistry Test. Engage with flashcards and multiple-choice questions, complete with hints and detailed explanations. Prepare effectively to excel in your exam!

Multiple Choice

What is the monomer used to make polypropene?

Explanation:
Propene is the monomer used to make polypropene. In addition polymerization, the C=C double bond in propene (CH2=CH-CH3) opens and many propene molecules join end-to-end to form long chains. The repeating unit in the polymer is -CH2-CH(CH3)-, reflecting the methyl group from each propene unit along the backbone. This gives polypropylene its characteristic structure. If you started with ethene, you’d get polyethylene; with butene you’d get polybutene; and methene isn’t a practical monomer. So propene is the correct monomer.

Propene is the monomer used to make polypropene. In addition polymerization, the C=C double bond in propene (CH2=CH-CH3) opens and many propene molecules join end-to-end to form long chains. The repeating unit in the polymer is -CH2-CH(CH3)-, reflecting the methyl group from each propene unit along the backbone. This gives polypropylene its characteristic structure. If you started with ethene, you’d get polyethylene; with butene you’d get polybutene; and methene isn’t a practical monomer. So propene is the correct monomer.

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