Sa. Xu et Sc. Tjong, TENSILE DEFORMATION MECHANISMS OF THE BLENDS OF POLYCARBONATE WITH POLY(METHYL METHACRYLATE), European Polymer Journal, 34(8), 1998, pp. 1143-1149
The deformation mechanisms of polycarbonate/poly(methyl methacrylate)
blends at room temperature has been investigated by means of the dilat
ometric measurements. A quantitative model developed by Heikens el al.
[10,11] has been applied to obtain information on the separate contri
butions of several possible deformation mechanisms to the total deform
ation. For pure poly(methyl methacrylate) and the polycarbonate/poly(m
ethyl methacrylate) 10/90 blend, crazing is found to be the dominant p
lastic deformation mechanism, whereas shear deformation is responsible
for the toughening of pure polycarbonate and the polycarbonate/poly(m
ethyl methacrylate) 90/10 blend. However, both crazing and shear defor
mation contribute to the total elongation of polycarbonate/poly(methyl
methacrylate) 50/50 blend. (C) 1998 Elsevier Science Ltd. All rights
reserved.