The dependence of miscibility on blend composition and temperature for syndiotactic polystyrene/poly(vinyl methyl ether) (SPS/PVME) blends, was investigated by solid state n.m.r. spectroscopy and d.s.c. and compared with that of the blend containing atactic polystyrene (APS). The temperature dependence of C cross polarization/magic angle spinning intensities for the resonance of SPS/PVME blends indicates that these blends are phase separated, whereas for the APS/PVME blends, there is evidence of extensive mixing. These results are supported by the presence of one and two glass transition temperatures for the SPS/PVME and APS/PVME blends, respectively, on the d.s.c. thermograms
Посилання на статтю:
Miscibility of syndiotactic polystyrene/poly(vinyl methyl ether) blends / Sossio Cimmino, Emilia Di Pace, Ezio Martuscelli and Clara Silvestre* // Polymer. – 1993. – Vol 34. – P. 214-217.