Polymerization of Vinyl Acetate with Ammonium Peroxodisulfate in Emulsion

Polymerization of Vinyl Acetate with Ammonium Peroxodisulfate in Emulsion 

Safetyprecautions Befote this experiment is carried out,Sect. 2.2.5 must be read as well as the material safety data sheets (MSDS) for all chemicals and products used. 

A 500-ml standard apparatus (round bottom flask, several inlets for stirrer, reflux condenser, nitrogen flux or vaccum, thermometer, heating bath) is evacuated and Ailed with nitrogen. 5 g of poly(vinyl alcohol) are then placed in the flask (see Example 5-1) and dissolved in 100 ml of distilled water by stirring at 60 °C next are added 2.2 g of ox-ethylated nonylphenol and 0.4 g (1.8 mmol) of ammonium peroxodisuifate buffered 

The solution is heated to 72 C and 25 g (0.29 mol) of vinyl acetate (freshly distilled under nitrogen) are added dropwise. The temperature of the water bath is then raised to 80°C. As soon as the internal temperature reaches 75°C, a further 75 g (0.87 mol) of vinyl acetate are added dropwise at such a rate that the internal 

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Example 3.3 Polymerization of Vinyl Acetate with Ammonium Peroxodisulfate in Emulsion... 

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