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monomer

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.03 sec.
monomer (mŏn`əmər): see polymer polymer (pŏl`əmər)
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monomer

Molecule of any of a class of mostly organic compounds that can react with other molecules of the same or other compounds to form very large molecules (polymers). The essential feature of monomer molecules is the ability to form chemical bonds (see bonding) with at least two other monomer molecules (polyfunctionality). Those able to react with two others can form only chainlike polymers; those able to react with three or more can form cross-linked, network polymers. Examples of monomers (and their polymers) are styrene (polystyrene), ethylene (polyethylene), and amino acids (proteins).


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Key statement: A functional polymer having at least one substituent capable of forming a stable free radical is formed by polymerizing a diene monomer, such as butadiene, to form a first polymer block of the functional polymer.
His recognition of the excellent matrix forming potential of epoxy resins as well as their poor ambient polymerization characteristics (slow under anionic catalysis and uncontrollable under the more rapid cationic catalysis then available) led him to the discovery of a unique hybrid monomer which combined the low polymerization contraction of epoxy resins with the excellent setting behavior of acrylic monomers [10].
Tokyo, Japan, Aug 24, 2005 - (JCNN) - Sumitomo Chemical announced on August 22 that its South Korean affiliate LG MMA Corporation has started the construction of a new methyl methacrylate (MMA) monomer production facility at it Yeosu plant.
 
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