Nonisothermal crystallization kinetics in rubber-filled LDPE

The process of nonisothermal crystallization in LDPE filled with a vulcaniz ed rubber powder was studied. It was found that adding 20-75 wt % of the el astic filler with a particle size ranging within 0.1 < d < 0.2 mm did not a ffect the rate of LDPE matrix crystallization. The kinetic inertness of the rubber powder is related to a weak adhesion interaction at the matrix-fill er interface. It is shown that calculation of the rate of crystallization u nder nonisothermal conditions from DSC data must take into account the fill er contribution to the exothermal peak of LDPE crystallization on the DSC c urve.