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Monodispersed polymethylmethacrylate spheres are synthesized from the emulsion polymerization of a rapidly stirred aqueous suspension of methyl methacrylate. 2,2Azobis(2methylpropionamidine) dihydrochloride is a heat activated water soluble free radical initiator so the emulsion droplets polymerize starting from their outer edge. The small uniform diameter particles should appear irridescent if they are closepacked and their size is similar to the wavelength of visible light.

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