Comparison of Thermoplastic Polyesters

In addition to inherently faster crystallization kinetics in a water-heated mold, PBT offers several other benefits compared to PET. First of all, the lower processing temperatures required for PBT make it less susceptible to hydrolytic degradation and thus drying is not as critical as in the case of PET. Thermoplastic composites made from PBT also tend to have a higher % elongation to break (Table 15.2) [14, 15]. Although this attribute does not necessarily show 

A relative comparison of the four main thermoplastic polyesters is shown in Table 15.3. Each resin has a different set of strengths, and depending on the application and the individual molder s requirements, the right polyester for the 

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