Chloroacetylation of PVA with Chlaroacetic Acid
Chemical Required: Polyvinyl alcohol, paratoluenesulphonic
acid, ethanol 1, 2-dichloroethane,
chloroacetic acid, sodium carbonate.
Procedure: 40 g PVA and 8 ml para-toluenesulphonic acid
were dissolved in 200 ml 1, 2-dichloroethane at 110 °C. To
this solution was added 70 ml of chloroacetic acid. The
mixture was stirred at 90 o
C for 1 hour. After cooling to room
temperature, the polymer was precipitated by cold ethanol,
dissolved in a solution of sodium carbonate in acetone and
reprecipitated [2] several times into ethanol (Scheme -2).
Chloroacetylation of PVA with Chlaroacetic Acid Chemical Required: Polyvinyl alcohol, paratoluenesulphonicacid, ethanol 1, 2-dichloroethane,chloroacetic acid, sodium carbonate.Procedure: 40 g PVA and 8 ml para-toluenesulphonic acidwere dissolved in 200 ml 1, 2-dichloroethane at 110 °C. Tothis solution was added 70 ml of chloroacetic acid. Themixture was stirred at 90 oC for 1 hour. After cooling to roomtemperature, the polymer was precipitated by cold ethanol,dissolved in a solution of sodium carbonate in acetone andreprecipitated [2] several times into ethanol (Scheme -2).
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