polymérisation par condensation


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  • La polymérisation désigne la réaction chimique ou le procédé par lesquels des petites molécules (par exemple des hydrocarbures de deux à dix atomes de carbone) réagissent entre elles pour former des molécules de masses molaires plus élevées.

  • Qu'est-ce qu'une réaction de polycondensation ?

    Une polycondensation est une réaction de polymérisation dans laquelle des petites molécules sont éliminées lors de la réaction entre les motifs monomères.

  • Les polymères de condensation concernent tout type de polymères formés par une réaction de condensation — où les molécules se rejoignent — perdant de petites molécules, les sous-produits tels que l'eau ou le méthanol.
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    What is condensation polymerization?

    • Condensation polymerization is a step-growth polymerization where tiny molecules react with each other to make larger structural units while releasing the by-products like water or methanol molecule.
      . The by-products are usually known as condensate.
      . Polymerization is also generally mentioned as step-growth polymerization.

    What are two examples of condensation?

    • Top 6 Condensation Examples in Daily Life.
    • Formation of the water cycle.
    • Condensation in Air Conditioning.
    • Dew on the Grass.
    • Visible Breath During Winter.
    • Steamy mirror in your bathroom.
    • Condensation in Water Preservation.
    • Some Other Useful Examples of Condensation in Everyday Life.
    • Frequently Asked Questions.
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    What is the definition of a condensation polymer?

    • Condensation polymers are any kind of polymers formed through a condensation reaction—where molecules join together—losing small molecules as byproducts such as water or methanol.
      . Common condensation polymers include polyamides, polyacetals, and proteins. .
      . Similarly, you may ask, what are examples of condensation polymers?

    What happens during a polymerization reaction?

    • During polymerization, a polymer spends most of its time in increasing its chain length, or propagating.
      . After the radical initiator is formed, it attacks a monomer (Figure 11).
      . In an ethene monomer, one electron pair is held securely between the two carbons in a sigma bond.
      . The other is more loosely held in a pi bond.
      . The free radical uses one electron from the pi bond to form a more stable bond with the carbon atom.










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