In addition, residual vulcanising ingredients were eliminated from the prevulcanised latex using a Supraspeed centrifuge (Sorvall RC 5C Plus, DuPont) at 4,000 rpm, for 15 min (three times) at room temperature.
In addition, residual vulcanising ingredients wereeliminated from the prevulcanised latex using a Supraspeed centrifuge(Sorvall RC 5C Plus, DuPont) at 4,000 rpm, for 15 min(three times) at room temperature.