Oligomérique et polymérique

[Medical stdnt]

bonjour ,
"oligomérique" "polymérique" qlqn s'il vous plait peut me simplifier ce que c'est deux termes veulent dire ?
j'ai vu énormément de définitions mais ça reste un peu encore flou pour moi
Merci d'avance ^^
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[moco]

Bonsoir,
Il me semble qu'il n'existe pas de définition claire de la notion d'oligocène et de celle de polymère. Mais il me semble que si le nombre de monomères est de l'ordre de la dizaine, on peut parler d'oligomère. S'il est de l'ordre de la centaine et davantage, on parle de polymère. Mais ce n'est qu'une impression personnelle. Je veux bien accepter une autre définition, s'il en existe une.

[HarleyApril]

Bonsoir

Le gold book de l'IUPAC n'est pas plus précis :

oligomer molecule
Also contains definition of: oligomeric
A molecule of intermediate relative molecular mass, the structure of which essentially comprises a small plurality of units derived, actually or conceptually, from molecules of lower relative molecular mass.
Notes:

A molecule is regarded as having an intermediate relative molecular mass if it has properties which do vary significantly with the removal of one or a few of the units.
If a part or the whole of the molecule has an intermediate relative molecular mass and essentially comprises a small plurality of units derived, actually or conceptually, from molecules of lower relative molecular mass, it may be described as oligomeric, or by oligomer used adjectivally.

macromolecule (polymer molecule)
Also contains definitions of: macromolecular, polymeric
A molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass.
Notes:

In many cases, especially for synthetic polymers, a molecule can be regarded as having a high relative molecular mass if the addition or removal of one or a few of the units has a negligible effect on the molecular properties. This statement fails in the case of certain macromolecules for which the properties may be critically dependent on fine details of the molecular structure.
If a part or the whole of the molecule has a high relative molecular mass and essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass, it may be described as either macromolecular or polymeric, or by polymer used adjectivally.