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F: a.They omprove performance. E.G.Fire retardants. B.They reduce production costs. E.G.Chalk. C.They may be reingforcing agents.E.G. Zinc oxide, wood fluor, celluloseand strach. P:Since may organic polymers are too rigid for particular applications, they are blended with plasticizers(the largest group of additives). They increase the plasticity of a material. C:Colorants are common additives, althoug their weight contribution in small. ELASTOMERS: These plastics are very elastic. They ger deformed due to an external force and they recover their shape. Ej: synthetic rubber(caucho)

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