polymerization techniques polystyrene was first made by e simon in 1839 who at the time believed he had produced an oxidation product which he called styrol oxide since that time ...
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...Polymerization techniques polystyrene was first made by e simon in who at the time believed he had produced an oxidation product which called styrol oxide since that polymerisation of styrene has been extensively studied fact a great deal work now enables us to understand fundamentals carried out on polymer may be prepared mass suspension solution and emulsion methods two being most important advantage apparent simplicity gives high clarity very good electrical insulation characteristics there are however severe problems due exothermic reaction broad molecular weight distribution reduces exothenn but lead solvent recovery hazards also act as chain transfer agent cause reduction avoids these is some contamination water furthermore must dried aggregated before sold pellets suitable for injection moulding extrusion seldom used with large quantities soap seriously affects this process therefore only production latex bulk or pure monomer offers simplest minimum difficult control because rad...