K. Darragas et al., MISCIBILITY OF BLENDS OF LC POLYESTERS AND BLENDS OF POLYBUTYLENE TEREPHTHALATE WITH LC POLYESTER, European Polymer Journal, 30(10), 1994, pp. 1165-1171
Blends of liquid crystalline polyesters with liquid crystalline polyes
ters and a semi-crystalline aromatic polyester, poly(butylene terephth
alate) (PBT), have been investigated. Blends were prepared by the diss
olution/co-precipitation method and by melt-mixing in the mesophase; t
hey were characterized by optical microscopy, d.s.c., small-angle lase
r light scattering and X-ray diffraction. Liquid crystalline polyester
s which only differ in the length of the flexible spacers show complet
e miscibility. For PBT/liquid crystalline polyester blends, the experi
mental results indicate the occurrence of partial miscibility.