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Studies on miscibility of glass fibre reinforced blends of polyethylene terephthalate with polybutylene terephthalate

✍ Scribed by G.O. Shonaike

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
313 KB
Volume
28
Category
Article
ISSN
0014-3057

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✦ Synopsis

Al~traet--Miscibility of blends of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) has been investigated by differential scanning calorimetry (DSC). The first DSC scans revealed that the blends show two glass transition temperatures (T~) over the whole composition range. The second DSC scans showed a single Tg. It was found that a single Tg indicates a homogeneous single phase showing that the two components were miscible in the amorphous region. The large difference between the experimental and predicted results was attributed to the reinforcing agents in the blend. Compositiondependent values of Tg, Tin, T c and T~ of the blends were determined. The higher the PBT content in the PET-rich region, the lower the miscibility as confirmed by the thermal properties.

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