The photo-oxidation of poly(diethylene glycol terephthalate) (PDEGT) under accelerated aging conditions has been investigated. A weatherometer was used to expose samples simulated sunlight air, replicating outdoor exposure. Irradiations were also performed air using UV lamps wavelengths centred on 302 and 365 nm. After exposure, the extent degradation determined attenuated total reflectance Fou...

Microspheres of a hydrophobic and a hydrophilic poly(ether-ester) copolymer were evaluated for their in-vitro and in-vivo biocompatibility and degradation. The microspheres prior to and after sterilization were tested for in-vitro cytotoxicity. The invivo biocompatibility of the poly(ethylene glycol) terephthalate and poly(butylene terephthalate) (PEGT/PBT) microspheres was evaluated subcutaneo...

This paper reports the hydrolysis of several PBT materials (pigmented or not). Degradation was monitored by gel permeation chromatography (chain scission), DSC (crystalline morphology), tensile test (residual mechanical properties) and DVS (polymer-water interaction). The embrittlement comes from chain scission associated with a small chemicrystallization effect. Results lead to proposal kineti...