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Miscibilities and rheological properties of poly(butylene succinate)–Poly(butylene terephthalate) blends

✍ Scribed by Young Jin Kim; O Ok Park

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
247 KB
Volume
72
Category
Article
ISSN
0021-8995

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✦ Synopsis

An aliphatic/aromatic polyester blend has been dealt with in this study. As an aliphatic polyester, poly(butylene succinate) (PBS) was used, which is thought to possess biodegradability, but it is relatively expensive. It has been blended with poly(butylene terephthalate) (PBT) in order to obtain a biodegradable blend with better mechanical properties and lower cost. The miscibilities of PBS-PBT blends were examined not only from the changes of T g but also from log GЈ-log GЉ plots. Dynamic mechanical thermal analyzer (DMTA) was an appropriate, sensitive method to obtain the glass transitions properly. Thermal stabilities of PBS and PBT were also verified at the temperature of 240°C. A transesterification reaction between two polyesters at 240°C was hardly detectable so that it did not affect the miscibilities and properties of the blends.

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