There are several studies regarding the miscibility of polymethylmetha
crylate (PMMA) and polyvinylidene fluoride (PVDF) blends in the molten
state along with the rheological properties; however, there is a lack
of information regarding the glassy state. The mechanical and wear pr
operties of this system were investigated using both steady and dynami
c tests. The results do not follow a simple additive rule of mixtures,
but they can be readily explained by the phase morphology of the syst
em. The system is semi-compatible with both an amorphous domain and a
crystalline domain. The results for increasing PMMA concentration are:
glass transition temperature, T-g (-34-130 degrees C); storage modulu
s, E' (1.1-2.6 GPa); flexural strength, sigma(0)(75-96 MPa); compressi
ve strength, sigma(c)(60-120 MPa); and relative wear rate, R-A (0.05-1
.8 mu m/rev). The amorphous blend had a saturation limit of about 40 w
t% PVDF. (C) 1997 Elsevier Science Ltd. All rights reserved.