Miscibility of syndiotactic polystyrene/poly(vinyl methyl ether) blends
1993; Elsevier BV; Volume: 34; Issue: 1 Linguagem: Inglês
10.1016/0032-3861(93)90309-x
ISSN1873-2291
AutoresSossio Cimmino, Emilia Di Pace, E. Martuscelli, Clara Silvestre, David M. Rice, Frank E. Karasz,
Tópico(s)Material Properties and Processing
ResumoThe 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 13C 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.
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