Solventfree mechanochemical polymerization of ureasuccinic acid and ...
During grinding experiments, a planetary ball mill (Retsch, model PM100, Haan, Germany) was used. Two stainless steel reaction vessels with volumes of 50 cm 3 were loaded with balls 10 mm in diameter. Approximately 20 g of mixtures of urea ( mol) with succinic acid ( mol); and urea ( mol), succinic acid ( mol) and glycerol (0. ...