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Abstract: PET is one of the most important commercial polymers and much
effort is being made to modify PET by melt copolymerization with a second
glycol or diacid comonomer in a way that yields an amorphous material with a
high Tg. In this study, various amounts (0-100 %) of
tricyclodecanedimethanol (TCDDM) were used to copolymerize ethylene glycol
and terephthalic acid to form a series of copolyesters (PETD). The
compositions, microstructures, thermal behaviors, optical transmissions,
mechanical properties, and gas transport properties of the copolymers are
comprehensively examined over the entire range of copolymer compositions.
The experimental results support the tuning of the properties of these
copolymers by adjusting their composition. Therefore, they contribute to the
design of new PET materials with a better balance among thermal, mechanical
, optical, and gas transport properties. |
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