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Viscoelastic and thermal behaviour of ternary blends polystyrene/polycarbonate/tetramethylpolycarbonate

✍ Scribed by C. Belaribi; G. Marin; Ph. Monge

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
300 KB
Volume
22
Category
Article
ISSN
0014-3057

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✦ Synopsis

A~tract--The thermal analysis characteristics of ternary blends polystyrene(PS)/polycarbonate(PC)/ tetramethylpolycarbonate (MPC) show that the PS forms mostly a pure PS phase, whereas the PC and MPC go into a second phase very close to a binary blend of the same PC/MPC weight composition. However, an additional broad glass transition is observed for most blends within the same temperature range (129-133°). On the other hand, the viscoelastic properties of the ternary blends containing 75% PC/MPC weight fraction exhibit an additional low frequency (large relaxation times) relaxation domain. This relaxation domain might be attributed either to a PS/MPC interphase or to PS "trapped" at the PS-PC/MPC interphase.

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