To study hydrolysis of aromatic and aliphatic polyesters cutinase 1 from Thermobifida cellulosilytica (Thc_Cut1) was expressed in P. pastoris. No significant differences between the expression of native Thc_Cut1 and of two glycosylation site knock out mutants (Thc_Cut1_koAsn and Thc_Cut1_koST) concerning the total extracellular protein concentration and volumetric activity were observed. Hydrol...

Alkaline hydrolysis is a useful method for enhancing properties of polyesters. In this study, the alkali three polyester filament yarns (poly(ethylene terephthalate) (PET), poly(trimethylene (PTT) and poly(butylene (PBT)) was comparatively investigated under various conditions such as concentration, solvent mixture, process duration temperature. The weight loss different evaluated. Scanning ele...

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...

Poly(butylene adipate-co-terephthalate) (PBAT) and poly(butylene succinate-co-adipate) (PBSA) blend films were prepared with different contents of a multifunctional epoxide chain extender Joncryl ADR-4468 (ADR) or benzoyl peroxide (BPO). The long-chain-branching (LCB) introduced by ADR branched/crosslinked entanglement induced BPO increased melt elasticity, viscosity compatibility, as indicated...