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monomer
(redirected from Monomers)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.04 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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By adding sufficient vinyl aromatic monomer, a low molecular weight functional rubber polymer can be rendered processable at ambient temperatures, while maintaining a solution viscosity which is suited to subsequent free radical catalyzation of vinyl aromatic monomers.
The chemistry of organosilanes can be quite complex involving hydrolytically initiated self-condensation reactions in solvents (including monomers) that can culminate in polymeric silsesquioxane structures, exchange reactions with hydroxylated or carboxylated monomers to form silyl ethers and esters, as well as the formation of silane derived interfaces by adhesive coupling with siliceous mineral surfaces.
To develop an abrasion-resistant material, potentially for cable jackets, tubing, and shoe soles, a reactive blend of TPU and PVC was created by preblending two monomers of TPU with PVC, then adding the third TPU monomer in a second stage.
 
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